# When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the

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When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.

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Here, V = 12 V, I = 25 mA = 2.5 xx 10^-3 A
Resistance of the resistor, R = (V)/(I) = (12 V)/(2.5 xx 10^-3 A) = 4800 Omega = 4.8 k Omega.