Question

when we connect wires from the instrument to the battery terminal magnet needle deflects in one direction .When we reverse the terminal the deflection is in other direction.
What is the relationship between direction of current and direction of needle?​

Answer 1

Answer:

When the direction of the current flowing through the wire is reversed, direction of the magnetic field, so produced, also changes its direction which results in changing the position of pole of needle kept near the wire.

Explanation:

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