The device used for detecting feeble electric current is MCQ with Answer and Explanation

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The device used for detecting feeble electric current is

A. Ammeter

B. Voltmeter

C. Galvanometer

D. Wattmeter

Answer: Option C

Solution (By JKSSB Mock Tests)

Galvanometer detects small currents and direction. Ammeter measures larger currents.

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Practice More Physics Questions

Question #1

The mass number of an element is sum of

A. Neutrons and electrons

B. Protons only

C. Protons and neutrons

D. Protons and electrons

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Correct Answer: Option C

Explanation:
Mass number A = Z + N.

This question belongs to: Science Physics

Question #2

The graph between velocity and time for uniform acceleration is

A. Straight line inclined to time axis

B. Circle

C. Straight line parallel to time axis

D. Parabola

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Correct Answer: Option A

Explanation:
v = u + at, linear relation, slope = a. Straight line inclined. If a=0, parallel to time axis (uniform velocity). Displacement-time is parabola for uniform acceleration.

This question belongs to: Science Physics

Question #3

Electric field due to point charge: E ∝

A. r

B. 1/r²

C. r²

D. 1/r

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Correct Answer: Option B

Explanation:
Coulomb's law: E = kq/r² ⇒ E ∝ 1/r². Inverse square law fundamental to electrostatics and gravitation. Memory tip: 'Point charge field: inverse square; double distance ⇒ field becomes 1/4'. Electrostatics concept frequently tested in competitive exams.

This question belongs to: Science Physics

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