why is magnetic compass needed to test the conduction of electric current?
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We need a magnetic compass to test the conduction of electric current because the magnetic compass will get deflected even if there is a small value of current. Sometimes the bulb does not glow on passing electric current. ... So, in the case of a small current, we need a magnetic compass to test the conduction.
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We need a magnetic compass to test the conduction of electric current because the magnetic compass will get deflected even if there is a small value of current. Sometimes the bulb does not glow on passing electric current. ... So, in the case of a small current, we need a magnetic compass to test the conduction.
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