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Torque on current loop, moving coil galvanometer, conversion to ammeter and voltmeter

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Every question from past board papers on Torque on current loop, moving coil galvanometer, conversion to ammeter and voltmeter, newest paper first. Open any question for its full worked answer.

NEET UG 2018 question paper (official, booklet EE)

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  1. Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit voltage applied) is 20 div/V. The resistance of the galvanometer is

    4 marks · See worked answer →

NEET UG 2017 question paper (official, booklet B)

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  1. A 250 - Turn rectangular coil of length 2.1 cm and width 1.25 cm carries a current of 85 \(\mu\)A and subjected to a magnetic field of strength 0.85 T. Work done for rotating the coil by 180\(^\circ\) against the torque is :

    4 marks · See worked answer →