The terminal potential difference of a cell is less than its emf due to MCQ with Answer and Explanation

Question Report Error

The terminal potential difference of a cell is less than its emf due to

A. Low temperature

B. External resistance

C. Overcharging

D. Internal resistance

Answer: Option D

Solution (By JKExamLibrary)

V = E - Ir, drop across internal resistance.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

The unit of electric power is

A. Ampere

B. Joule

C. Watt

D. Ohm

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Correct Answer: Option C

Explanation:
Watt (W) = J/s = V×A. Commercial unit kilowatt-hour (energy). Joule is energy. Ohm resistance. Ampere current.

This question belongs to: Science Physics

Question #2 Report Error

The moderator used in a nuclear reactor serves to

A. Slow down neutrons

B. Generate neutrons

C. Absorb neutrons

D. Cool the reactor

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Correct Answer: Option A

Explanation:
Moderator slows fast neutrons to thermal energies.

This question belongs to: Science Physics

Question #3 Report Error

A car accelerates from rest at 4 m/s² for 5 s, then moves at constant velocity for 5 s. Total distance is

A. 200 m

B. 100 m

C. 50 m

D. 150 m

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Correct Answer: Option D

Explanation:
Phase 1: s1 = ½×4×25 = 50 m, v=20 m/s. Phase 2: s2 = 20×5 = 100 m. Total 150 m.

This question belongs to: Science Physics

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