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Quite often, connecting wires carrying c...

Quite often, connecting wires carrying currents in opposite directions are twisted together in using electrical appliances. Explain how it avoids unwanted magnetic fields.

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In a twisted pair, both the wires behave as a solenoid carrying current in opposite directions, superimposed with each other. Hence, the resultant magnetic field will be zero. Hence, twisted pairs of wire results in a less amount of magnetic field build up around them.
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