Question

A 100 Hz a.c is flowing in a 14mH coil .Find its reactance

Answer 1

Answer:

L = 14 mH = 14* 10 ^-3 H = 14 *10^-3 H

f = 100 Hz

As per the formula , Reactance of coil  = Lω = L * 2*π*f

∴ Reactance of coil  = 14*10^-3 * 2 * 3.14 * 100

= 879.2ohm