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A potentiometer wire, 4 m long and resis...

A potentiometer wire, 4 m long and resistance `10 Omega`, is connected in series with a resistance of 1988 `Omega` and a cell of emf 2V and internal resistance `2Omega`. What is the potential gradient along the wire?

Text Solution

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Potential gradient,
`=(Er)/((r+r_( c) + R)L) = ((2)(10))/((10 + 2+ 1988)(4)) = 5/2000 = 0.0025` V/m
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