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(a) What is meant by the resistance of a conductor ? Write the relation between resistance, potential difference and current. (b) When a 12 V

(a) What is meant by the “resistance of a conductor” ? Write the relation between resistance, potential
difference and current.
(b) When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Calculate the value of the resistance of the resistor.

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