The unit of electric potential is MCQ with Answer and Explanation

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The unit of electric potential is

A. Ohm

B. Coulomb

C. Volt

D. Ampere

Answer: Option C

Solution (By JKSSB Mock Tests)

Volt = J/C. Named after Alessandro Volta. Potential difference drives current. 1 V = 1 J of work per coulomb charge moved.

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Practice More Physics Questions

Question #1

A current of 0.5 A flows through a 100 Ω resistor. Voltage across it is

A. 0.005 V

B. 50 V

C. 200 V

D. 5 V

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Correct Answer: Option B

Explanation:
V = IR = 0.5×100 = 50 V.

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Question #2

Diffraction demonstrates light's:

A. EM nature

B. Particle nature

C. Wave nature

D. Dual nature

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Correct Answer: Option C

Explanation:
Diffraction (bending around obstacles) is wave phenomenon explained by Huygens' principle. Particle model predicts straight-line propagation. Memory aid: 'Diffraction/interference ⇒ wave nature; photoelectric ⇒ particle nature'. Wave-particle duality frequently tested in competitive exams.

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Question #3

Nichrome wire is used in electric heaters because it has

A. Low resistivity

B. Low melting point

C. High resistivity and high melting point

D. Low density

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Correct Answer: Option C

Explanation:
High resistivity for heat, high melting point to withstand temperature.

This question belongs to: Science Physics

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