Given below are two statements: one is labelled as Assertion A and the other as Reason R.

Question

G1 Physics · Accepted Answer

Electromagnets require a core that: 1. becomes strongly magnetized when current flows, 2. loses magnetization quickly when current is switched off. Soft iron has high magnetic permeability and low retentivity, so it satisfies both requirements. Therefore Assertion A is true, Reason R is true, and R correctly explains A. Hence option B follows.