The specific resistance of a wire is \[\rho \], its volume is 3\[{{m}^{3}}\] and its resistance is 3 ohms, then its length will be [CPMT 1984]

The specific resistance of a wire is \[\rho \], its volume is 3\[{{m}^

1.	The specific resistance of a wire is \[\rho \], its volume is 3\[{{m}^{3}}\] and its resistance is 3 ohms, then its length will be [CPMT 1984]
A.	\[\sqrt{\frac{1}{\rho }}\]
B.	\[\frac{3}{\sqrt{\rho }}\]
C.	40 W
D.	\[\rho \sqrt{\frac{1}{3}}\]
Answer» C. 40 W

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The specific resistance of a wire is \[\rho \], its volume is 3\[{{m}^{3}}\] and its resistance is 3 ohms, then its length will be [CPMT 1984]

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