A transformer designed for a fixed RMS voltage and frequency is supplied with the same RMS voltage at a substantially lower frequency. What happens to the maximum core flux, neglecting saturation?
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A transformer designed for a fixed RMS voltage and frequency is supplied with the same RMS voltage at a substantially lower frequency. What happens to the maximum core flux, neglecting saturation?

G1 Physics · Accepted Answer

For sinusoidal operation V≈4.44fNΦmax. At fixed V and N, lowering f increases Φmax.