An electric fuse prevents damage to the appliances and circuits due to ____.
What defines a solenoid in the context of magnetic fields?
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Assertion (A): Magnetic field lines around a current-carrying straight conductor form closed loops.
Reason (R): Magnetic monopoles do not exist in nature.
What did Hans Christian Oersted discover accidentally?
What is the purpose of the earth wire in a domestic electric circuit?
Assertion (A): A metallic wire carrying an electric current has associated with it a magnetic field.
Reason (R): The field lines about the wire consist of a series of concentric circles whose direction is given by the right-hand rule.
Assertion (A): The magnetic field lines around a bar magnet are closed curves.
Reason (R): Inside the magnet, the direction of field lines is from its south pole to its north pole.
Why does a compass needle get deflected when brought near a _____?
The magnetic field is stronger where the field lines are ______.
The phenomenon of electromagnetic induction is
In Fleming’s left-hand rule the thumb indicates the direction of
Which property of a proton can change while it moves freely in a magnetic field?
Assertion (A): The deflection of a compass needle decreases as the distance from a current-carrying conductor increases.
Reason (R): The magnetic field produced by a given current in the conductor decreases as the distance from it increases.
A metallic wire carrying an electric current has associated with it a _______.
Which among of these are the main characteristics of fuse element?
The main advantage of A.C power transmission over D.C power transmission over long distance is
What is the name of the rule that determines the direction of magnetic field lines around a current-carrying straight conductor?
Assertion (A): When a circular loop of wire lies in the plane of the table with current passing through it clockwise, the magnetic field direction inside and outside the loop can be determined using the right-hand rule.
Reason (R): The magnetic field in a given region is uniform.
What is the purpose of a fuse in an electrical circuit?
What determines the pattern of the magnetic field generated by a current through a conductor?
What do concentric circles around a straight conducting wire represent?
What is the primary function of an electric fuse in a circuit?
The direction of induced current produced in a rectangular coil, when it is rotated in a uniform magnetic field, is given by
146 videos|358 docs|249 tests
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146 videos|358 docs|249 tests
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