An electric heater of resistance 10 Ω draws current 5 A. Power consumed is MCQ with Answer and Explanation

Question

Share Report Error

An electric heater of resistance 10 Ω draws current 5 A. Power consumed is

A. 500 W

B. 2 W

C. 50 W

D. 250 W

Answer: Option D

Solution (By JKSSB Mock Tests)

P = I²R = 5² × 10 = 25 × 10 = 250 W. Also P = VI, but V not given. Can find V = IR = 50 V, then P = 50×5 = 250 W.

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

Share Report

A boy throws a ball vertically upward with velocity 20 m/s. Time after which ball returns to his hands (g=10) is

A. 4 s

B. 2 s

C. 1 s

D. 8 s

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option A

Explanation:
Total time = 2u/g = 40/10 = 4 s.

This question belongs to: Science Physics

Question #2

Share Report

A stone is dropped from a height of 80 m. Time to reach ground (g=10) is

A. 8 s

B. 16 s

C. 2 s

D. 4 s

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option D

Explanation:
h = ½gt² => 80 = 5t² => t²=16 => t=4 s.

This question belongs to: Science Physics

Question #3

Share Report

Radioactivity was discovered by

A. Roentgen

B. Curie

C. Becquerel

D. Rutherford

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option C

Explanation:
Henri Becquerel discovered natural radioactivity in uranium salts (1896). Curie isolated radium, Rutherford classified rays.

This question belongs to: Science Physics

Explore All Physics MCQs