A) 0 kJ
B) 10 kJ
C) 20 kJ
D) 30 kJ
Correct Answer: D
Solution :
\[R=100\,\Omega \,;\,I=1A\,;\] \[t=5\,\min \,\,=5\times 60=300\,\,s\] change in internal energy = heat generated in coil \[={{I}^{2}}Rt=\left( {{\left( 1 \right)}^{2}}\times 100\times 300 \right)J\] \[=\text{ }30000\text{ }J\text{ }=\text{ }30\text{ }kJ\]
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