For substances,hysteresis (B-H) curves are gi | vedclass

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(D) For a temporary magnet,the material should have low retentivity and low coercivity. This means the hysteresis loop should be narrow and have a sma

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(D) For a temporary magnet,the material should have low retentivity and low coercivity. This means the hysteresis loop should be narrow and have a small area. Among the given options,the hysteresis loop in Figure $D$ is the narrowest and has the smallest area,making it the most suitable material for a temporary magnet (like soft iron). Therefore,the correct option is $D$.

For substances,hysteresis $(B-H)$ curves are given as shown in the figures. Which of the following is best for making a temporary magnet?

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