North pole induces __________a)Clockwise currentb)Anti-clockwise curre...
A north pole will always induce an anti-clockwise current whereas a south pole will always induce a clockwise current due to electromagnetic theory.
North pole induces __________a)Clockwise currentb)Anti-clockwise curre...
Explanation:
The north pole of a magnet induces an anti-clockwise current when placed near a conducting loop. This can be explained using Faraday's law of electromagnetic induction.
Faraday's Law of Electromagnetic Induction:
Faraday's law states that a change in the magnetic field through a circuit induces an electromotive force (EMF) in the circuit. This EMF causes an electric current to flow if the circuit is closed.
Direction of Induced Current:
The direction of the induced current can be determined using Lenz's law. Lenz's law states that the direction of the induced current is such that it opposes the change in magnetic flux that caused it.
Inducing an Anti-clockwise Current:
When the north pole of a magnet is brought near a conducting loop, the magnetic field through the loop increases. According to Lenz's law, the induced current will flow in a direction that opposes this increase in magnetic field.
To oppose the increase in magnetic field, the induced current will create a magnetic field in the opposite direction. This can be achieved by creating a magnetic field with lines of force flowing in a clockwise direction.
According to the right-hand rule for electromagnetic induction, if we point our thumb in the direction of the magnetic field (from north to south), the induced current will flow in the direction opposite to the curling of our fingers. In this case, the curling of the fingers will be in the anti-clockwise direction.
Therefore, when the north pole of a magnet is brought near a conducting loop, it induces an anti-clockwise current in the loop.
Summary:
When the north pole of a magnet is brought near a conducting loop, it induces an anti-clockwise current in the loop. This is due to Faraday's law of electromagnetic induction and Lenz's law, which state that the induced current opposes the change in magnetic flux that caused it.