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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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Answer variants:
Connect the other terminal of the battery with another piece of wire.
Join the free ends of two wires together for a while.
Allow the other end to be free.
Wrap an electric wire around the tray a few times.
Your tester, with two free wire ends, is now ready to use.
Connect one free end of the wire to one of the battery terminals.
Due to the magnetic effect of current, the compass needle deflects.
Take the tray from a discarded matchbox's interior.
Inside it, place a little compass needle.
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