the strength of Electromagnet is depend on
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1)it's no.of coil wounded
mohankrishna2121:
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how much current is passing through it
i don't know but option is 1) magnitude of current. 2) direction of current.3)time.4) velocity
it is 1) magnitude of current
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No of turns in coils
changing he current passing through it
this one is not in options
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