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in Magnetism and Magnetic Effects of Electric Current by (48.5k points)
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Assertion: Soft iron is used as transformer core. 

Reason: Soft iron has narrow hysteresis loop.

(a) If both assertion and reason are true and the reason in the correct explanation of the assertion.

 (b) If both assertion and reason are true but the reason is not correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.

(e) If assertion is false but reason is true.

1 Answer

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Best answer

(a) If both assertion and reason are true and reason is the correct explanation of assertion. 

Explanation: For high efficiency of transformer, the energy loss will be lesser if the hysteresis loop is lesser area, i.e narrow.

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