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  • An ideal gas is closed thermally insuted cylinder. A coil of  resistor carrying <img alt="2A"

An ideal gas is closed thermally insuted cylinder. A coil of 250\Omega resistor carrying 2A for 3 minutes supplies heal to the gas. The change in internal energy of the gas is -

Option: 1

180J


Option: 2

300J


Option: 3

180KJ


Option: 4

3KJ


Answers (1)

best_answer

The heat supplied under the condition.

Q=\Delta v \quad--(1)

and Q=i^2 R T

\begin{aligned} & =(2)^2 \times 250 \times(3 \times 60) A^2 \cdot \Omega \cdot \mathrm{sec} \\ & =4 \times 250 \times 180 \mathrm{~J} \\ & =180000 \mathrm{~J}=180 \mathrm{~kJ} \end{aligned}

Posted by

HARSH KANKARIA

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