Explore topic-wise MCQs in Physics.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.

1.

The magnetic flux in a closed circuit of resistance 20 Ω varies with time t as Φ = 4t3 + 2t2 – 15t + 3. Calculate the magnitude of induced emf at t = 1s.

A. 3 V
B. 4 V
C. 5 V
D. 6 V
Answer» C. 5 V
Discussion
2.

The induced emf persists only as long as the change in magnetic flux continues.

A. True
B. False
Answer» B. False
Discussion
3.

Faraday’s laws are result of the conservation of which quantity?

A. Momentum
B. Energy
C. Charge
D. Magnetic field
Answer» C. Charge
Discussion
4.

What is proportional to the magnitude of the induced emf in the circuit?

A. Rate of change of current in the circuit
B. Rate of change of resistance offered
C. Rate of change of magnetic flux
D. Rate of change of voltage
Answer» D. Rate of change of voltage
Discussion
5.

Which among the following is true about Faraday’s law of Induction?

A. An emf is induced in a conductor when it cuts the magnetic flux
B. An emf is induced in a conductor when it moves parallel to the magnetic field
C. An emf is induced in a conductor when it moves perpendicular to the magnetic field
D. An emf is induced in a conductor when it is just entering a magnetic field
Answer» B. An emf is induced in a conductor when it moves parallel to the magnetic field
Discussion