You are provided with a magnetic compass, an empty matchbox

cbse
cbse-class-8-science
che-effects-ele-curr

#1

You are provided with a magnetic compass, an empty matchbox, a battery of two cells and connecting wires. Using these objects how will you make a tester for testing an electric circuit? Draw the necessary circuit diagram and explain.

Answer:
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Whenever current flows through the circuit the magnetic compass needle shows deflection due to magnetic effect of current.