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

A rigid container with thermally insulated walls contains a coil of re

1.	A rigid container with thermally insulated walls contains a coil of resistance 100 Omega, carrying current 1 A. Change in internal energy after 5 minute will be:
Answer» 0 KJ 20 kJ 10 kJ 30 kJ Solution :CHANGE in internal ENERGY = heat PRODUCED due to current `dU=I^(2)Rt=1^(2)xx100xx300=30 kJ` `therefore` CORRECT choice is (d).

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

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