An electric charge 10−3μC is placed at the origin (0,0) of X - Y co-ordinate system. Two points A and B are situated at (√2,√2) and (2,0) respectively. The potential difference between the points A and B will be:
9 volt
zero
2 volt
4.5 volt
A
2 volt
B
4.5 volt
C
9 volt
D
zero
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Solution
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VA=14πϵqrA=14πϵq√2+2=14πϵq2
VB=14πϵqrB=14πϵq√4+0=14πϵq2
VA−VB=0
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