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A point charge Q is placed at point O. p...

A point charge Q is placed at point O. potential difference `V_(A)-V_(B)` is positive. Is the charge Q negative or positive ?

Text Solution

Verified by Experts

The electric potential `V=(1)/(4epsi_(0))*(Q)/(r)`
`V=(1)/(r)`
The potential due to a point charge decreases with increases of distance.
`v_(A)-V_(B)gt 0 rArr _(A) gt V_(B)`
Hence the charge Q is positive.
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Knowledge Check

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