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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.
Related Questions: - A potentiometer wire of length 10 m and resistance 10 Ω per metre is connected in series
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A potentiometer wire of length 10 m and resistance 10 Ω per metre is connected in series
- A car wheel is rotated to uniform angular acceleration about its axis
- A scooter is going round a circular road of radius 100 m at a speed of 10m/s
- The momentum of a body is increased by 20%.The percentage increases in kinetic energy
- Sand is being dropped on a conveyor belt at the rate of M kg/s. The force necessary
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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