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MHT CET 2017 Physics Solved Paper

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Question : 40

Total: 50

The resistivity of potentiometer wire is 40 x 10−8 ohm - metre and its area of cross- section is 8 x 10−6m2. If 0.2 ampere current is flowing through the wire, then the potential gradient of the wire is

10−1 V/m
10−2 V/m
10−3 V/m
10−4 V/m

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