TransformersQuestion 1074 of 1506

A load is connected to the secondary of a transformer. What happens to the core flux?

It rises in proportion to the load
It falls to zero
It reverses direction
It stays about the same

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Correct answer: It stays about the same

The primary induced voltage must balance the source, so the flux is held. The primary draws extra current to cancel the secondary mmf.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 10.1: Mutual Inductance and Basic Operation

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Questions last reviewed: 18 October 2026

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