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 Form 2 Physics Magnetic Effect of Electric Current Questions and Answers

A metre rule is suspended by a thread such that it in equilibrium balanced by a permanent magnet attached to the metre rule and some weight as shown in the figure below.
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If the soft iron is fixed to the bench, state and explain the effect on the metre rule when the switch is close.

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Answer Text:
The metre rule will tilt to the anticlockwise direction,this iks because the soft core will acquire a south pole which will attract the north pole of the magnet on the metre rule


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