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

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

A. Internal resistance

B. External resistance

C. Overcharging

D. Low temperature

Answer: Option A

Solution (By JKSSB Mock Tests)

V = E - Ir, drop across internal resistance.

This question belongs to: Science Physics

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C.V. Raman discovered

A. Photoelectric effect

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Correct Answer: Option C

Explanation:
Raman effect: inelastic scattering of light, 1928, Nobel 1930.

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Question #2

In a semiconductor, the temperature coefficient of resistance is

A. Zero

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C. Negative

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Semiconductors have negative temperature coefficient: resistance decreases with temperature.

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Explanation:
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