SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The current creates an electric field around the wire.
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The current creates a magnetic field around the wire
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The current adds electric charge to the compass needle.
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The current increases the forces of gravity on the compass needle.
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Detailed explanation-1: -The reason behind this is the magnetic force due to current. Whenever current flows from any conductor it creates a magnetic field around the conductor this is due to the movement of charges inside the conductor.
Detailed explanation-2: -A current carrying wire behaves like a magnet and affects other magnets in its magnetic field. As a result, the needle in the compass gets deflected when we place a compass near a current conducting wire.
Detailed explanation-3: -When an electric current passes through a wire, it behaves like a magnet. This magnetic effect of the electric current makes the compass needle deflect from the north-south direction.
Detailed explanation-4: -Magnetic Fields If you hold a compass near a wire through which current is flowing, the needle on the compass will be deflected. Since compasses work by pointing along magnetic field lines, this means that there must be a magnetic field near the wire through which the current is flowing.
Detailed explanation-5: -When a current-carrying wire is brought close to a magnetic compass then there will be a deflection in the magnetic compass due to the magnetic field formation. The deflection increase with the increased current in the wire because the magnetic force is directly proportional to the magnetic field strength.