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A voltmeter of range 2 V and resistance 300Ω cannot be converted into ammeter of range
Options
(a) 1A
(b) 1mA
(c) 100mA
(d) 10mA
Correct Answer:
1mA
Explanation:
Ig = (2 / 300) A = (2 / 300) × 1000 mA = (20 / 3) mA
Therefore, Ig = 6.67 mA
As range of ammeter cannot be decreased but can be increased only, therefore, the instrument cannot be converted to measure the range 1 mA.
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Topics: Current Electricity
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The minimum velocity (in ms⁻¹) with which a car driver must traverse a flat curve
- When the angle of incidence is 60° on the surface of a glass slab, it is found
- If a magnetic substance is brought near the north or the south pole of a bar magnet
- In insulators (CB is Conduction Band and VB is Valence Band)
- The ratio of speed of an electron in ground state in Bohr’s first orbit of hydrogen atom
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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