A coil has a resistance of 60$\Omega$ and an impedance of 100$\Omega$. Its reactance, in ohms, is:
A) 40
B) 60
C) 80
D) 117
E) 160

Question

Quizplus · Accepted Answer

We can use the following formula to find the reactance (X) of the coil:

impedance (Z) = √(resistance (R)^2 + reactance (X)^2)

Substituting the given values, we get:

100 = √(60^2 + X^2)

Solving for X, we get:

X = √(100^2 - 60^2) ≈ 80

Therefore, the reactance of the coil is approximately 80 ohms. The best choice is C.

A Coil Has a Resistance of 60 Ω\OmegaΩ And an Impedance of 100