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resistance per unit length of the wire. APPARATUS: Ammeter, voltmeter, Rheostat, battery Eliminator, Resistance wire, connecting wires, plug key etc. THEORY: Ohm’s law states that at a given temperature, the current (I) flowing through a conductor is directly proportional to this potential difference (V) between the two ends of the conductor. Thus I V constant I V R V I R 1 .V R 1 I Where, R is the resistance of the conductor Here, B - Battery R - Resistance wire A - Ammeter V - Voltmeter Rh - Rheostat K - Key If, l = length of the given wire R = resistance of the wire Then
