A student performed an experiment where he placed a magnetic compass near a current carrying wire. She notices some deflection in the compass needle. What causes the deflection of the needle in the compass?
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It the current is increased in the conductor the deflection of the compass needle
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A magnet is a material or object that produces a magnetic field and compass is a instrument containing a magnetized pointer which shows the direction of magnetic north and bearings from it.
- Electric field is caused by stationary charges and magnetic field is caused by moving electric charges. Stationary charges cause electric fields.
- A magnetic compass is made by using magnetized iron and that iron points towards the pole of the earth. When another magnet is brought near, the compass will point on towards the other magnet as its magnetic strength is stronger than earth’s magnetic strength.
- 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 magnetic field around a wire carrying electric current will form concentric circles around the wire.
Thus deflection will increase when the current is increased because the electric field is directly proportional to the magnetic field strength
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