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2. A magnetic circuit has a continuous core of a ferromagnetic material. Coil is supplied from a battery and draws a certain amount of exciting current producing a certain amount a of flux in the core. If now an air gap is introduced in the core, the exciting current will: (A) increase (B) remain same. (C) decrease (D) become 0.​

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If an air gap is introduced in the core, the exciting current of the ferromagnetic material is going to become decreased.

The field current of a magnetic device refers to its magnetizing current. It is the current that is required to energize the core. It is commonly observed in devices such as the transformer.

If an air gap is introduced in the core, the exciting current will of the ferromagnetic material is going to become decreased.

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