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 an ammeter of desired range and to verify the same.
Class XII Apparatus : A weston type galvanometer, a voltmeter, a battery or battery eliminator, two (5000 Ω and 500 Ω) resisitance boxes, two one-way keys, a rheostat, a screw gauge, a metre, scale, an ammeter of given range, connecting wires and a piece of sand paper.
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