A copper wire of diameter 2 mm carries 12 A of current for an electric stove.Assuming the resistivity of copper of 1.7 * 10^-8 $\varOmega$.m,the power dissipated in 2 m length of the wire is A)0.72 W. B)0.98 W. C)1.23 W. D)1.44 W. E)1.56 W.

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The Answer of A copper wire of diameter 2 mm carries 12 A of current for an electric stove.Assuming the resistivity of copper of 1.7 * 10^-8 $\varOmega$.m,the power dissipated in 2 m length of the wire is A)0.72 W. B)0.98 W. C)1.23 W. D)1.44 W. E)1.56 W.

A Copper Wire of Diameter 2 Mm Carries 12 a of Current