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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
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The weight of a body on surface of earth is 12.6 N. When it is raised to a height
- If a wire is stretched to four times its length, then the specific resistance
- The amplitude of S.H.M. y=2 (sin 5πt+√2 cos 5πt) is
- A vibrating string of certain length l under a tension T resonates with a mode
- A capacitor of 10 µF charged upto 250 volt is connected in parallel with another
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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