Electromagnetic Induction Mock Tests

A coil of 200 turns has an area of 0.01 m² per turn. The magnetic field through the coil increases uniformly from 0.1 T to 0.5 T in 0.05 s. The magnitude of the induced emf is:

A coil of 100 turns and area 0.01 m² is placed perpendicular to a magnetic field that increases from 0.2 T to 0.8 T in 0.1 s. The induced emf in the coil is:

A magnetic flux through a coil changes from 0.2 Wb to 0.8 Wb in 0.04 s. The magnitude of the induced emf is:

An LCR series circuit has R = 100 Ω, X_L = 200 Ω and X_C = 100 Ω. The impedance of the circuit is:

A rectangular coil is placed in a uniform magnetic field perpendicular to its plane. The emf is induced in the coil when it is:

A conducting rod of length 1 m moves perpendicular to a magnetic field of 0.5 T with velocity 2 m/s. The induced emf is:

An AC source of frequency 50 Hz is connected to a series LCR circuit with L = 0.5 H, C = 25 μF, and R = 10 Ω. The impedance of the circuit is approximately:

An AC voltage V = 200 sin(314t) is applied across a resistor of 100 Ω. The rms current in the circuit is: