The correct expression for the potential at a p... - JAMB Physics 2011 Question
The correct expression for the potential at a point distance r from a charge q in an electric field is
A
| _q2 |
| 4πεor2 |
B
| _q2 |
| 4πεor |
C
| _q |
| 4πεor2 |
D
| _q |
| 4πεor |
correct option: d
Electric potential is work done in taking a unit mass or charge from infinity to that point
| V = | w | = | Fr | = | Q1Q2 | x | r |
| Q | Q | 4πεor2 | Q1 |
| = | _q |
| 4πεor |
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