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Electric charges of + 10 mu C, + 5mu C, ...

Electric charges of `+ 10 mu C, + 5mu C, - 3mu C` and `+9 mu C` are placed at the corners of a square of side `sqrt(2) m` the potential at the centre of the square is

A

`1.8V`

B

`1.8 xx10^6 V`

C

`1.8 xx10^5 V`

D

`1.8 xx10^4 V`

Text Solution

Verified by Experts

The correct Answer is:
C
`V=(K[10+5-3+8]xx10^(-6))/(sqrt2//sqrt2)=9 xx10^9 xx20 xx10^(-6)`
`= 1.8 xx10^5` Volt.
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