Home » Past Questions » Physics » An a.c of 1A at a frequency of 800 cycles per second flows through a coil, the inductan...

An a.c of 1A at a frequency of 800 cycles per second flows through a coil, the inductan...


Question

An a.c of 1A at a frequency of 800 cycles per second flows through a coil, the inductance of which is 2.5mH and the resistance of which is 5Ω. What is the power absorbed in the Coil?

Options

A) 5W

B) 6W

C) 7W

D) 8W

The correct answer is A.

Explanation:

I = 1A, F = 800 cycles/s = 800Hz
R = 5Ω, L = 2.5mH
P = I\(^2\)R = I\(^2\) × 5 = 5W


More Past Questions:


Dicussion (1)