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प्रश्न
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.
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उत्तर
Whenever current flows through the circuit the magnetic compass needle shows deflection due to magnetic effect of current.
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संबंधित प्रश्न
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