Question 1

Charge of uniform density (3.5 nC/m) is distributed along the circular arc shown.Determine the electric potential (relative to zero at infinity) at point P.

Accepted Answer

A)  61 V
B)  42 V
C)  52 V
D)  33 V
E)  22 V

Question 2

For the potential  V=3x2z−2yz3V = 3 x ^ { 2 } z - 2 y z ^ { 3 }V=3x2z−2yz3  ,what is the corresponding electric field at the point (2,2,2) ?

Accepted Answer

A)    −24i~+16j~+36k~- 24 	ilde { \mathbf { i } } + 16 	ilde { \mathbf { j } } + 36 	ilde { \mathbf { k } }−24i~+16j~​+36k~ 
B)    12i~−16j~+−16k~12 	ilde { \mathbf { i } } - 16 	ilde { \mathbf { j } } + - 16 	ilde{ \mathbf { k } }12i~−16j~​+−16k~ 
C)    24i~−16j~−36k~24 	ilde { \mathbf { i } } - 16 	ilde{ \mathbf { j } } - 36 	ilde { \mathbf { k } }24i~−16j~​−36k~ 
D)    −6i~+2j~+6k~- 6 	ilde { \mathbf { i } } + 2 	ilde { \mathbf { j } } + 6 	ilde { \mathbf { k } }−6i~+2j~​+6k~ 
E)  The correct answer is not given.

Question 3

A charge of uniform density (0.80 nC/m) is distributed along the x axis from the origin to the point x = 10 cm.What is the electric potential (relative to zero at infinity) at a point,x = 18 cm,on the x axis?

Accepted Answer

A)  7.1 V
B)  5.8 V
C)  9.0 V
D)  13 V
E)  16 V

Question 4

Three identical point charges (+2.0 nC) are placed at the corners of an equilateral triangle with sides of 2.0-m length.If the electric potential is taken to be zero at infinity,what is the potential at the midpoint of any one of the sides of the triangle?

Accepted Answer

A)  16 V
B)  10 V
C)  70 V
D)  46 V
E)  44 V

Question 5

What is the potential difference across C2 when C1 = 5.0  μ\muμ F,C2 = 15  μ\muμ F,C3 = 30  μ\muμ F,and V0 = 24 V? 2 when C1 = 5.0  \mu F,C2 = 15  \mu F,C3 = 30  \mu F,and V0 = 24 V?   A) 21 V B) 19 V C) 16 V D) 24 V E) 8.0 V " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  21 V
B)  19 V
C)  16 V
D)  24 V
E)  8.0 V

Question 6

When a capacitor has a charge of magnitude 80  μ\muμ C on each plate the potential difference across the plates is 16 V.How much energy is stored in this capacitor when the potential difference across its plates is 42 V?

Accepted Answer

A)  1.0 mJ
B)  4.4 mJ
C)  3.2 mJ
D)  1.4 mJ
E)  1.7 mJ

Question 7

A charge of 20 nC is distributed uniformly along the x axis from x = -2.0 m to x = +2.0 m.What is the electric potential (relative to zero at infinity) at the point x = 5.0 m on the x axis?

Accepted Answer

A)  57 V
B)  48 V
C)  38 V
D)  67 V
E)  100 V

Question 8

Determine the energy stored by C4 when C1 = 20  μ\muμ F,C2 = 10  μ\muμ F,C3 = 14  μ\muμ F,C4 = 30  μ\muμ F,and V0 = 45 V. 4 when C1 = 20  \mu F,C2 = 10  \mu F,C3 = 14  \mu F,C4 = 30  \mu F,and V0 = 45 V.   A) 3.8 mJ B) 2.7 mJ C) 3.2 mJ D) 2.2 mJ E) 8.1 mJ " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  3.8 mJ
B)  2.7 mJ
C)  3.2 mJ
D)  2.2 mJ
E)  8.1 mJ

Question 9

The electric potential at the surface of a charged conductor

Accepted Answer

A)  is always zero.
B)  is always independent of the magnitude of the charge on the surface.
C)  may be set equal to zero by adding an appropriate constant to the potential at all points of space.
D)  is always such that the potential is zero at all points inside the conductor.
E)  is always such that the potential is always zero within a hollow space inside the conductor.

Question 10

Identical 8.0- μ\muμ C point charges are positioned on the x axis at x =  ±\pm± 1.0 m and released from rest simultaneously.What is the kinetic energy of either of the charges after it has moved 2.0 m?

Accepted Answer

A)  84 mJ
B)  54 mJ
C)  96 mJ
D)  63 mJ
E)  48 mJ

Question 11

How much electrical charge is needed to raise an isolated metal sphere of radius 1.0 m to a potential of 1.0 *106 V?

Accepted Answer

1.1 *10 <s...

Question 12

A charge of +3.0  ±\pm± C is distributed uniformly along the circumference of a circle with a radius of 20 cm.How much external energy is required to bring a charge of 25 ±\pm± C from infinity to the center of the circle?

Accepted Answer

A)  5.4 J
B)  3.4 J
C)  4.3 J
D)  2.7 J
E)  6.8 J

Question 13

If C = 10  μ\muμ F,what is the equivalent capacitance for the combination shown?

Accepted Answer

A)  7.5 μ\muμ F
B)  6.5  μ\muμ F
C)  7.0  μ\muμ F
D)  5.8  μ\muμ F
E)  13 μ\muμ F

Question 14

Two particles,each having a mass of 3.0  μ\muμ g and having equal but opposite charges of magnitude 5.0 nC,are released simultaneously from rest when the two are 5.0 cm apart.What is the speed of either particle at the instant when the two are separated by 2.0 cm?

Accepted Answer

A)  2.1 m/s
B)  1.5 m/s
C)  1.8 m/s
D)  2.4 m/s
E)  3.2 m/s

Question 15

An electric dipole having dipole moment of magnitude p is placed in a uniform electric field having magnitude E.What is the magnitude of the greatest change in potential energy that can happen for this dipole in this field?

Accepted Answer

A)  pE
B)    2pE2 p E2pE 
C)  4pE
D)    2pE\sqrt { 2 } p E2c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5,-10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8,-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0,35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5,-221l0 -0c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422s-65,47,-65,47zM834 80h400000v40h-400000z'/>​pE 
E)  No answer given is correct.

Question 16

The Bohr model pictures a hydrogen atom in its ground state as a proton and an electron separated by the distance a0 = 0.529 * 10 - 10 m.The electric potential created by the proton at the position of the electron is

Accepted Answer

A)  -13.6 V.
B)  +13.6 V.
C)  -27.2 V.
D)  +27.2 V.
E)  +5.12 * 109 V.

Question 17

Point charges of equal magnitudes (25 nC) and opposite signs are placed on (diagonally) opposite corners of a 60-cm *80-cm rectangle.If point A is the corner of this rectangle nearest the positive charge and point B is located at the intersection of the diagonals of the rectangle,determine the potential difference,VB -VA.

Accepted Answer

A)  -47 V
B)  +94 V
C)  zero
D)  -94 V
E)  +47 V

Question 18

Two particles,each having a mass of 3.0 μ\muμ g and having equal but opposite charges of magnitude of 6.0 nC,are released simultaneously from rest when they are a very large distance apart.What distance separates the two at the instant when each has a speed of 5.0 m/s?

Accepted Answer

A)  4.3 mm
B)  8.6 mm
C)  7.3 mm
D)  5.6 mm
E)  2.2 mm

Question 19

An electron (m = 9.1 *10 - 31 kg,q = -1.6*10 - 19 C) starts from rest at point A and has a speed of 5.0 *106 m/s at point B.Only electric forces act on it during this motion.Determine the electric potential difference VA -VB.

Accepted Answer

A)  -71 V
B)  +71 V
C)  -26 V
D)  +26 V
E)  -140 V

Question 20

In the Bohr model of the hydrogen atom,the electron circles the proton at a distance of 0.529 *10 - 10 m.Find the potential at the position of the electron.

Accepted Answer

The answer of In the Bohr model of the hydrogen...

Exam 20: Electric Potential and Capacitance

An electron (m = 9.1 10 ^- ³¹ kg,q = -1.610 ^- ¹⁹ C) starts from rest at point A and has a speed of 5.0 *10⁶ m/s at point B.Only electric forces act on it during this motion.Determine the electric potential difference V_A -V_B.

Correct Answer
verified

A charge of 20 nC is distributed uniformly along the x axis from x = -2.0 m to x = +2.0 m.What is the electric potential (relative to zero at infinity) at the point x = 5.0 m on the x axis?

Correct Answer
verified

Two particles,each having a mass of 3.0 $\mu$ g and having equal but opposite charges of magnitude 5.0 nC,are released simultaneously from rest when the two are 5.0 cm apart.What is the speed of either particle at the instant when the two are separated by 2.0 cm?

Correct Answer
verified

For the potential $V = 3 x ^ { 2 } z - 2 y z ^ { 3 }$ ,what is the corresponding electric field at the point (2,2,2) ?

Correct Answer
verified

A charge of +3.0 $\pm$ C is distributed uniformly along the circumference of a circle with a radius of 20 cm.How much external energy is required to bring a charge of 25 $\pm$ C from infinity to the center of the circle?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The electric potential at the surface of a charged conductor

Correct Answer
verified

If C = 10 $\mu$ F,what is the equivalent capacitance for the combination shown? $If C = 10 \mu F,what is the equivalent capacitance for the combination shown? A) 7.5 \mu F B) 6.5 \mu F C) 7.0 \mu F D) 5.8 \mu F E) 13 \mu F$

Correct Answer
verified

Charge of uniform density (3.5 nC/m) is distributed along the circular arc shown.Determine the electric potential (relative to zero at infinity) at point P.

Correct Answer
verified

A charge of uniform density (0.80 nC/m) is distributed along the x axis from the origin to the point x = 10 cm.What is the electric potential (relative to zero at infinity) at a point,x = 18 cm,on the x axis?

Correct Answer
verified

The Bohr model pictures a hydrogen atom in its ground state as a proton and an electron separated by the distance a₀ = 0.529 * 10 ^- ¹⁰ m.The electric potential created by the proton at the position of the electron is

Correct Answer
verified

Three identical point charges (+2.0 nC) are placed at the corners of an equilateral triangle with sides of 2.0-m length.If the electric potential is taken to be zero at infinity,what is the potential at the midpoint of any one of the sides of the triangle?

Correct Answer
verified

An electric dipole having dipole moment of magnitude p is placed in a uniform electric field having magnitude E.What is the magnitude of the greatest change in potential energy that can happen for this dipole in this field?

Correct Answer
verified

How much electrical charge is needed to raise an isolated metal sphere of radius 1.0 m to a potential of 1.0 *10⁶ V?

Correct Answer
verified
1.1 *10
View Answer

Two particles,each having a mass of 3.0 $\mu$ g and having equal but opposite charges of magnitude of 6.0 nC,are released simultaneously from rest when they are a very large distance apart.What distance separates the two at the instant when each has a speed of 5.0 m/s?

Correct Answer
verified

Correct Answer
verified

In the Bohr model of the hydrogen atom,the electron circles the proton at a distance of 0.529 *10 ^- ¹⁰ m.Find the potential at the position of the electron.

Correct Answer
verified

When a capacitor has a charge of magnitude 80 $\mu$ C on each plate the potential difference across the plates is 16 V.How much energy is stored in this capacitor when the potential difference across its plates is 42 V?

Correct Answer
verified

Identical 8.0- $\mu$ C point charges are positioned on the x axis at x = $\pm$ 1.0 m and released from rest simultaneously.What is the kinetic energy of either of the charges after it has moved 2.0 m?

Correct Answer
verified

Exam 20: Electric Potential and Capacitance

An electron (m = 9.1 *10 - 31 kg,q = -1.6*10 - 19 C) starts from rest at point A and has a speed of 5.0 *106 m/s at point B.Only electric forces act on it during this motion.Determine the electric potential difference VA -VB.

Correct AnswerverifiedShow Answer

A charge of 20 nC is distributed uniformly along the x axis from x = -2.0 m to x = +2.0 m.What is the electric potential (relative to zero at infinity) at the point x = 5.0 m on the x axis?

Correct AnswerverifiedShow Answer

Two particles,each having a mass of 3.0 μ\muμ g and having equal but opposite charges of magnitude 5.0 nC,are released simultaneously from rest when the two are 5.0 cm apart.What is the speed of either particle at the instant when the two are separated by 2.0 cm?

Correct AnswerverifiedShow Answer

For the potential V=3x2z−2yz3V = 3 x ^ { 2 } z - 2 y z ^ { 3 }V=3x2z−2yz3 ,what is the corresponding electric field at the point (2,2,2) ?

Correct AnswerverifiedShow Answer

A charge of +3.0 ±\pm± C is distributed uniformly along the circumference of a circle with a radius of 20 cm.How much external energy is required to bring a charge of 25 ±\pm± C from infinity to the center of the circle?

Correct AnswerverifiedShow Answer

What is the potential difference across C2 when C1 = 5.0 μ\muμ F,C2 = 15 μ\muμ F,C3 = 30 μ\muμ F,and V0 = 24 V?

Correct AnswerverifiedShow Answer

Determine the energy stored by C4 when C1 = 20 μ\muμ F,C2 = 10 μ\muμ F,C3 = 14 μ\muμ F,C4 = 30 μ\muμ F,and V0 = 45 V.

Correct AnswerverifiedShow Answer

The electric potential at the surface of a charged conductor

Correct AnswerverifiedShow Answer

If C = 10 μ\muμ F,what is the equivalent capacitance for the combination shown?

Correct AnswerverifiedShow Answer

Charge of uniform density (3.5 nC/m) is distributed along the circular arc shown.Determine the electric potential (relative to zero at infinity) at point P.

Correct AnswerverifiedShow Answer

A charge of uniform density (0.80 nC/m) is distributed along the x axis from the origin to the point x = 10 cm.What is the electric potential (relative to zero at infinity) at a point,x = 18 cm,on the x axis?

Correct AnswerverifiedShow Answer

The Bohr model pictures a hydrogen atom in its ground state as a proton and an electron separated by the distance a0 = 0.529 * 10 - 10 m.The electric potential created by the proton at the position of the electron is

Correct AnswerverifiedShow Answer

Three identical point charges (+2.0 nC) are placed at the corners of an equilateral triangle with sides of 2.0-m length.If the electric potential is taken to be zero at infinity,what is the potential at the midpoint of any one of the sides of the triangle?

Correct AnswerverifiedShow Answer

An electric dipole having dipole moment of magnitude p is placed in a uniform electric field having magnitude E.What is the magnitude of the greatest change in potential energy that can happen for this dipole in this field?

Correct AnswerverifiedShow Answer

How much electrical charge is needed to raise an isolated metal sphere of radius 1.0 m to a potential of 1.0 *106 V?

Correct Answerverified1.1 *10 View AnswerShow Answer

Two particles,each having a mass of 3.0 μ\muμ g and having equal but opposite charges of magnitude of 6.0 nC,are released simultaneously from rest when they are a very large distance apart.What distance separates the two at the instant when each has a speed of 5.0 m/s?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In the Bohr model of the hydrogen atom,the electron circles the proton at a distance of 0.529 *10 - 10 m.Find the potential at the position of the electron.

Correct AnswerverifiedShow Answer

When a capacitor has a charge of magnitude 80 μ\muμ C on each plate the potential difference across the plates is 16 V.How much energy is stored in this capacitor when the potential difference across its plates is 42 V?

Correct AnswerverifiedShow Answer

Identical 8.0- μ\muμ C point charges are positioned on the x axis at x = ±\pm± 1.0 m and released from rest simultaneously.What is the kinetic energy of either of the charges after it has moved 2.0 m?

Correct AnswerverifiedShow Answer

An electron (m = 9.1 10 ^- ³¹ kg,q = -1.610 ^- ¹⁹ C) starts from rest at point A and has a speed of 5.0 *10⁶ m/s at point B.Only electric forces act on it during this motion.Determine the electric potential difference V_A -V_B.

Correct Answer
verified

Correct Answer
verified

Two particles,each having a mass of 3.0 $\mu$ g and having equal but opposite charges of magnitude 5.0 nC,are released simultaneously from rest when the two are 5.0 cm apart.What is the speed of either particle at the instant when the two are separated by 2.0 cm?

Correct Answer
verified

For the potential $V = 3 x ^ { 2 } z - 2 y z ^ { 3 }$ ,what is the corresponding electric field at the point (2,2,2) ?

Correct Answer
verified

A charge of +3.0 $\pm$ C is distributed uniformly along the circumference of a circle with a radius of 20 cm.How much external energy is required to bring a charge of 25 $\pm$ C from infinity to the center of the circle?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

If C = 10 $\mu$ F,what is the equivalent capacitance for the combination shown? $If C = 10 \mu F,what is the equivalent capacitance for the combination shown? A) 7.5 \mu F B) 6.5 \mu F C) 7.0 \mu F D) 5.8 \mu F E) 13 \mu F$

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The Bohr model pictures a hydrogen atom in its ground state as a proton and an electron separated by the distance a₀ = 0.529 * 10 ^- ¹⁰ m.The electric potential created by the proton at the position of the electron is

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

How much electrical charge is needed to raise an isolated metal sphere of radius 1.0 m to a potential of 1.0 *10⁶ V?

Correct Answer
verified
1.1 *10
View Answer

Two particles,each having a mass of 3.0 $\mu$ g and having equal but opposite charges of magnitude of 6.0 nC,are released simultaneously from rest when they are a very large distance apart.What distance separates the two at the instant when each has a speed of 5.0 m/s?

Correct Answer
verified

Correct Answer
verified

In the Bohr model of the hydrogen atom,the electron circles the proton at a distance of 0.529 *10 ^- ¹⁰ m.Find the potential at the position of the electron.

Correct Answer
verified

When a capacitor has a charge of magnitude 80 $\mu$ C on each plate the potential difference across the plates is 16 V.How much energy is stored in this capacitor when the potential difference across its plates is 42 V?

Correct Answer
verified

Identical 8.0- $\mu$ C point charges are positioned on the x axis at x = $\pm$ 1.0 m and released from rest simultaneously.What is the kinetic energy of either of the charges after it has moved 2.0 m?

Correct Answer
verified