A pure inductive coil is connected to a 250 V, 50 Hz AC supply and is reported to consume 100 W of power. What is the reason for this power consumption?

Show Answers

The large physical dimensions of the coilThe inductive reactance offered by the coilThe magnitude of current passing through the coilThe given claim is incorrect; a pure inductor does not consume real powerNo power is consumed in a pure inductive circuit

Explanation

A pure inductor ideally does not dissipate real power; it only stores and releases energy in its magnetic field. Therefore, it cannot consume 100 W as stated. Any measured real power consumption must be due to non-ideal factors such as resistance. Hence, the statement that a pure inductance consumes 100 W is false.