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MHT CET Physics question

PhysicsMoving Charges and MagnetismMHT CET

A micrometer has a resistance of 100 and a full scale range of 50 A. It can be used as a voltmeter or as a higher range ammeter, provided a resistance is added to it. Pick the correct range and resistance combination from the following [K CET 2008]

Answer: (B)

Solution

For 10 V: in series, so (b) is right; for 50 V a series resistance of about 1 M is needed (not 10 k), the coil alone

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Question ID VK-078727