Galvanometer Ammeter and Voltmeter
To determine resistance of a galvanometer by half deflection method and to find its figure of merit. To convert it into a voltmeter of desired range and to verify the same.
Class XII Apparatus: A weston type galvanometer, a voltmeter of 0-3 volt rang, a battery of two cells or battery eliminator, two (5000 Ω and 500 Ω) resisitance boxes, two one way keys, a rheostat, connecting wires and a piece of sand paper.
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