Question

The potential at a point is 20 V. The work done in bringing a charge of 2 C from infinity to this point will be

a
10 J

b
40 J

c
5 J

d
20 J

Answer 1

http://www.tutorvista.com/content/physics/physics-iv/electrostatic-potential-capacitance/potential-energy-system-charges.php

Answer 2

40j

Answer 3

W=20*2=40J

Answer 4

Question: The potential at a point is 20 V. The work done to bring a charge of 0.5 C from infinity to this point will be ________.

1. 20 J
2. 10 J
3. 5 J
4. 40 J
Answer: 2


Question: Joule / Coulomb is same as ______________.

1. watt
2. volt
3. ampere
4. ohm
Answer: 2