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An electric field E = (20hati + 30 hatj)...

An electric field `E = (20hati + 30 hatj)` N/C exists in the space. If thepotential at the origin is taken be zero, find the potential at `(2 m, 2 m)`.

A

`-100 V`

B

`-200 V`

C

`-300 V`

D

`-400 V`

Text Solution

Verified by Experts

The correct Answer is:
A
`V_f-V_i=V_B-V_A=-20(x_f-x_i)-30(y_f-y_i)`
or `V_f=-20(2-0)-30(2-0)`
`=-100V (as V_i=0)`
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