Question

$P=I^n\times R$ (where P$=$ Power, R= Resistane , I= Current)

The value of n

• A. 0
• B. -1
• C. 1
• D. 2

Answer 1

The correct option is D 2

We know that power $P=VI$, where $V$ is the voltage and $I$ is the current.

From Ohm's law: $V=IR$

Substituting the expression of Ohm's law in the expression of power we get,

$P=IR\times I=I^{2}R$

Comparing this expression with $P=I^n\times R$ we can write $n=2$.