A 12 V battery with internal resistance 0.5 Ω delivers current 2 A. Terminal voltage is MCQ with Answer and Explanation

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A 12 V battery with internal resistance 0.5 Ω delivers current 2 A. Terminal voltage is

A. 11 V

B. 13 V

C. 12 V

D. 10 V

Answer: Option A

Solution (By JKSSB Mock Tests)

V = E - Ir = 12 - 2×0.5 = 11 V.

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Question #1

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A ball is thrown vertically upward with speed 20 m/s. The maximum height reached (g = 10 m/s²) is

A. 200 m

B. 20 m

C. 40 m

D. 10 m

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Correct Answer: Option B

Explanation:
Using v² = u² - 2gH, at maximum height v = 0. So 0 = 20² - 2×10×H => 400 = 20H => H = 20 m. Alternative formula: H = u²/(2g) = 400/20 = 20 m. Remember to use consistent units. For quick calculation, u²/(2g) is handy.

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Question #2

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The product of force and time is called

A. Energy

B. Impulse

C. Work

D. Power

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Correct Answer: Option B

Explanation:
Impulse = F Δt.

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Question #3

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The part of the refrigerator that absorbs heat from the interior is

A. Compressor

B. Evaporator coils

C. Condenser coils

D. Expansion valve

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Correct Answer: Option B

Explanation:
Evaporator (cooling coil) absorbs heat, refrigerant evaporates.

This question belongs to: Science Physics

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