Question 1

A proton that is initially at rest is accelerated through an electric potential difference of magnitude 500 V. How much kinetic energy does it gain? 
(e = 1.60 × 10-19 C)

Accepted Answer

A)   500 J
B)   8.0 × 10-17 J
C)   1.6 × 10-19 J
D)   800 JE) A) and B)
F) None of the above

Question 2

An ideal parallel-plate capacitor has a capacitance of C. If the area of the plates is doubled and the distance between the plates is halved, what is the new capacitance?

Accepted Answer

A)   C/4
B)   C/2
C)   2C
D)   4CE) A) and C)
F) B) and C)

Question 3

The equipotential surfaces for two spherical conductors are shown in the figure, with the value of potential marked on the line for each surface.
(a) If the distance between points A and B is 2.5 cm what is the approximate intensity of the electric field between these two points?
(b) If the distance between points C and D is 2.5 cm what is the approximate intensity of the electric field between these two points?

Accepted Answer

The answer of The equipotential surfaces for two spherical conductors...

Question 4

The three point charges shown in the figure form an equilateral triangle with sides 4.9 cm long. What is the electric potential (relative to infinity)  at the point indicated with the dot, which is equidistant from all three charges? Assume that the numbers in the figure are all accurate to two significant figures. (k = 1/4πε0 = 9.0 × 109 N ∙ m2/C2)  0 = 9.0 × 109 N ∙ m2/C2)    A)  0.00 V B)  1300 V C)  640 V D)  1900 V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   0.00 V
B)   1300 V
C)   640 V
D)   1900 VE) None of the above
F) All of the above

Exam 21: Electric Potential

Correct Answer
verified

An ideal parallel-plate capacitor has a capacitance of C. If the area of the plates is doubled and the distance between the plates is halved, what is the new capacitance?

Correct Answer
verified

A proton that is initially at rest is accelerated through an electric potential difference of magnitude 500 V. How much kinetic energy does it gain? (e = 1.60 × 10^-19 C)

Correct Answer
verified

Correct Answer
verified

Exam 21: Electric Potential

Correct AnswerverifiedShow Answer

An ideal parallel-plate capacitor has a capacitance of C. If the area of the plates is doubled and the distance between the plates is halved, what is the new capacitance?

Correct AnswerverifiedShow Answer

A proton that is initially at rest is accelerated through an electric potential difference of magnitude 500 V. How much kinetic energy does it gain? (e = 1.60 × 10-19 C)

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

A proton that is initially at rest is accelerated through an electric potential difference of magnitude 500 V. How much kinetic energy does it gain? (e = 1.60 × 10^-19 C)

Correct Answer
verified

Correct Answer
verified