How can it be shown that a magnetic field exists around a wire through which a direct electric current is passing?

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Solution

Step 1: The existence magnetic Field can be shown by a compass.
When we bring the compass needle close to a wire, it deflects, indicating a magnetic field due to the current-carrying wire.
Step 2: Reason
The cause of deflection of the needle is due to the magnetic force of attraction or repulsion caused by electricity and the presence of a magnet in the compass.

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