Electromagnetic Induction Mock Tests

A circular coil of radius 0.1 m with 100 turns is placed in a uniform magnetic field of 0.5 T perpendicular to its plane. The field is reduced to zero in 0.5 s. The induced emf in the coil is:

A resistance R, inductance L and capacitance C are connected in series across an AC source. If X_L = X_C, the impedance of the circuit is:

A circular coil of radius 10 cm and 100 turns is placed with its plane perpendicular to a uniform magnetic field of 0.5 T. The field is reduced to zero in 0.5 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:

Self-inductance of a coil depends on:

A resistor of 10 Ω and an inductor of inductive reactance 10 Ω are connected in series to an AC source of 100 V. The current in the circuit is:

A series LCR circuit has R = 100 Ω, L = 1 mH, and C = 1 μF. The resonant frequency of the circuit is approximately:

According to Faraday's law of electromagnetic induction, the induced emf in a circuit is directly proportional to: