This page covers Agniveer (All) Electromagnetic Induction with complete concept notes, 18 graded practice MCQs, key points and exam-specific tips. Free to study.
18graded MCQs · easy to hard · full solution & trap analysis
A straight conductor of length 0.8 m moves perpendicular to a magnetic field of 0.5 T with velocity 10 m/s. What is the motional EMF induced across the conductor?
The SI unit of magnetic flux is:
A coil with 200 turns has a magnetic flux change of 0.04 Wb in 0.02 seconds. Calculate the induced EMF.
A rectangular coil of area 0.5 m² is placed perpendicular to a magnetic field of 2 T. If the magnetic field changes to 5 T in 0.1 seconds, what is the magnitude of induced EMF?
According to Lenz's law, the direction of induced current in a coil is such that it:
A circular coil of radius 0.1 m with 50 turns is placed in a magnetic field that increases uniformly from 1 T to 3 T in 4 seconds. What is the induced EMF?
According to Faraday's law of electromagnetic induction, the induced EMF in a coil depends on which of the following?
A rectangular coil moves out of a uniform magnetic field region. The induced current in the coil will flow in a direction such that its magnetic field:
A solenoid with 500 turns and cross-sectional area 0.04 m² experiences a change in magnetic field from 0.8 T to 0.2 T in 3 seconds. Calculate the magnitude of induced EMF.
A rectangular coil with 100 turns, area 0.2 m², is placed perpendicular to a magnetic field of 0.5 T. If the magnetic field is reduced to zero in 2 seconds, what is the magnitude of induced EMF?
Which of the following statements correctly describes Lenz's law in electromagnetic induction?
A straight conductor of length 0.5 m moves with velocity 4 m/s perpendicular to a uniform magnetic field of 2 T. Calculate the motional EMF induced across the conductor.
The magnetic flux through a coil changes from 60 Wb to 20 Wb in 5 seconds. If the coil has 200 turns, what is the magnitude of induced EMF?
A coil is rotated in a uniform magnetic field. At what angle between the plane of the coil and the magnetic field is the magnetic flux through the coil maximum?
A rectangular coil of area 0.5 m² is placed perpendicular to a magnetic field of 2 T. If the magnetic field is reduced uniformly to zero in 0.4 seconds, calculate the magnitude of induced EMF in the coil.
A solenoid has 500 turns, cross-sectional area of 0.02 m², and a current changing from 2 A to 8 A in 0.5 seconds. If the magnetic field inside is directly proportional to current, find the self-induced EMF.
A conducting rod of length 0.8 m moves with velocity 5 m/s perpendicular to a uniform magnetic field of 1.5 T. The rod moves at right angles to its own length and perpendicular to the field. Calculate the motional EMF induced across the rod.
A circular coil with resistance 4 Ω is placed in a changing magnetic field. The magnetic flux through the coil changes from 0.6 Wb to 0.2 Wb in 0.1 seconds. What is the magnitude of the induced current in the coil?