Q. If $2.2kW$ power is transmitted through a $100\Omega$ line at $22,000V,$ the power loss in the form of heat will be
A) $0.1\ W$
B) $1\ W$
C) $10\ W$
D) $100\ W$
Explanation
(b) $P = Vi \Rightarrow i = \frac{2.2 \times 10^{3}}{22000} = \frac{1}{10}A$
$Now\ loss\ of\ power = i^{2}R = \left( \frac{1}{10} \right)^{2} \times 100 = 1\ W$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.