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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 power obtained in a reactor using U²³⁵ disintegration is 1000 kW
- The kinetic energy of an electron in the first excited state is
- If the wavelength of incident light falling on a photosensitive material decreases,
- An ideal gas is expanding such that PT²=constant. The coefficient of volume
- The current in a self-inductance L=40 mH is to be increased uniformly from 1A to 11 A
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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