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The electric potential at point A is 20 ...

The electric potential at point `A` is `20 V` and at `B` is `-40 V`. Find the work done by an external and electrostatic force in moving an electron slowly from B to A.

A

`9.6 xx 10^(-18)J`

B

`-9.6 xx 10^(-18)J`

C

`3.2 xx 10^(-18)J`

D

`-3.2 xx 10^(-18)J`

Text Solution

Verified by Experts

The correct Answer is:
B
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