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What is the difference between ac and dc current? Alternating current (AC) and direct current (DC) are two types of current in electricity. The basic difference between ac and dc current is that AC current reverses its direction while flowing in a circuit, while DC current does not change its direction. The alternating current generates frequency while direct current has ...

The value of flux density for any value of current is always greater when the current is decreasing ,then when it is increasing magnetism lags behind the magnetizing current.This process is known as hysteresis. Hysteresis Loop definition To investigate a ferromagnetic material, a bar of that material such as iron is placed in an alternating current solenoid. When the alternating ...