Question

Why is magnetic compass needed to test the conduction of electric current?

Answer 1

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⠀⠀⠀⠀⠀⠀⠀Answer

When a small amount of current is flowing through the conductor, the bulb will not glow as the filament of the bulb will not get heated up. Hence, inorder to detect the presence of small value of current, we need magnetic compass. The magnetic compass will get deflected even if there is a small value of current.

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