The current in a circuit having constant resistance is tripled. The power dissipation will become:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 9 times
In a circuit with constant resistance, the power dissipation (P) -
$P=I^2R$
R = Resistance
I = Current
$I'=3I$ (given)
$∴P'=(3I)^2R$
$=9I^2R$
$=9P$