A resistor develops $500\, J$ of thermal energy in $20 \,s$ when a current of $1.5\, A$ is passed through it. If the current is increased from $1.5 \,A$ to $3\, A$ what will be the energy (in $J$) developed in $20\, s$.
JEE MAIN 2021, Medium
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$500=(1.5)^{2} \times R \times 20$
$E =(3)^{2} \times R \times 20$
$E =2000 \,J$
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