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A constant voltage is applied between th...

A constant voltage is applied between the two ends of a uniform metallic wire. Some heat is developed in it. The heat developed is doubled if

A

both the length and the radius of the wire are halved.

B

both the length and the radius of the wire are doubled.

C

the radius of the wire is doubled.

D

the length of the wire is doubled.

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The correct Answer is:
B
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