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A rigid container with thermally insulat...

A rigid container with thermally insulated walls contains a coil of resistance `100Omega`, carrying current 1A. Change in internal energy after 5 min will be

A

zero

B

10kJ

C

20kJ

D

30kJ

Text Solution

Verified by Experts

W = 0. Therefore, from first law of thermodynamics , `Delta U=Delta Q-i^2Rt=(1)^2 (100) (5 times60)J=30kJ`
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