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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
- Two closed pipes produce 10 beats per second when emitting their fundamental nodes.
- Which of the following is the function of the step-up transformer?
- A solenoid 1.5 m long and 0.4 cm in diameter possesses 10 turns per cm length
- A uranium nucleus ₉₂ U ²³⁸ emits an α-particle and a β-particle in succession.
- A thin and circular disc of mass M and radius R is rotating in a horizontal plane
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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