Which appliance works on the principle of electromagnetic induction? MCQ with Answer and Explanation

Question

Share Report Error

Which appliance works on the principle of electromagnetic induction?

A. Electric heater

B. Induction cooker

C. Fuse

D. Incandescent bulb

Answer: Option B

Solution (By JKSSB Mock Tests)

Induction cooker induces eddy currents in pan. Heater uses Joule heating.

This question belongs to: Science Physics

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Physics Questions

Question #1

AC RMS value defined for equivalent:

A. Magnetic field

B. Heating effect

C. Voltage

D. Charge flow

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option B

Explanation:
I_rms defined so I_rms²R = average power, same heating as DC current. For sine wave: I_rms = I₀/√2. Memory tip: 'RMS: heating equivalence; use RMS for power calculations'. AC fundamentals frequently tested in competitive exams.

This question belongs to: Science Physics

Question #2

Which of the following is used as a moderator in nuclear reactor?

A. Cadmium

B. Uranium

C. Boron

D. Graphite

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option D

Explanation:
Graphite, heavy water (D₂O), beryllium are moderators. Cadmium and boron are control rods (absorb neutrons). Uranium is fuel. Moderator slows neutrons.

This question belongs to: Science Physics

Question #3

A body starts from rest and moves with uniform acceleration. The ratio of distances covered in 1st, 2nd, and 3rd seconds is

A. 1:4:9

B. 1:1:1

C. 1:3:5

D. 1:2:3

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option C

Explanation:
s_nth = u + a/2 (2n-1). u=0, so distances proportional to (2n-1): 1,3,5.

This question belongs to: Science Physics

Explore All Physics MCQs