Question

In a purely inductive circuit, power can only be stored in the form of a magnetic field. Given a 250V source at 60Hz is delivered to a 2.8H load, what is the reactive power stored by an ideal inductor? Give your answer in var.

Answer 1

The reactive power stored by an ideal inductor in a purely inductive circuit can be calculated using the formula (Voltage^2) / (Angular Frequency * Inductance).

Step-by-step explanation:

In a purely inductive circuit, the power can only be stored in the form of a magnetic field. In an ideal inductor, the reactive power stored can be calculated using the formula:

Reactive Power (VAR) = (Voltage^2) / (Angular Frequency * Inductance)

Given a 250V source at 60Hz delivered to a 2.8H load, substituting the values into the formula gives:

Reactive Power = (250^2) / (2 * pi * 60 * 2.8) = 162.1 VAR (approximately)