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Two point charges of 20 mu C and 80 muC ...

Two point charges of `20 mu C` and `80 muC` are 10 cm apart where will the electric field strength be zero on the line joining the charges from `20 mu C` charge

A

0.1m

B

0.04m

C

0.033m

D

0.33m

Text Solution

Verified by Experts

The correct Answer is:
C

`E_p=0`
`implies (Kxx20 xx10^(-6))/x^2 = (Kxx80 xx10^(-6))/((10-x)^2) implies (10 -x)/x =2`
`implies 10 - x = 2x implies x = 10//3m`
`implies x =10/3 xx1/100 = 0.033m `
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