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Question
The magnitude of induced current in a closed coil increases with the increase in the ................. of magnetic lines of force.
The magnitude of induced current in a closed coil increases with the increase in the ................. of magnetic lines of force.
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Solution
The correct option is A strength
The magnitude of induced current in a closed coil increases with the increase in the strength of magnetic lines of force.
When a magnetic compass is brought close to a current carrying wire there is deflection in the compass due to the formation of magnetic field. The magnetic field lines around a long wire which carries an electric current form concentric circles around the wire. The direction of the magnetic field is perpendicular to the wire.
The deflection increases when the current is increased because the magnitude of the field is directly proportional to the strength of the electric current. That is, stronger the electric field, stronger the magnetic field.
The magnitude of induced current in a closed coil increases with the increase in the strength of magnetic lines of force.
When a magnetic compass is brought close to a current carrying wire there is deflection in the compass due to the formation of magnetic field. The magnetic field lines around a long wire which carries an electric current form concentric circles around the wire. The direction of the magnetic field is perpendicular to the wire.
The deflection increases when the current is increased because the magnitude of the field is directly proportional to the strength of the electric current. That is, stronger the electric field, stronger the magnetic field.
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