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The resistance of an ammeter is 13Ω and its scale is graduated for a current upto 100 amps. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto 750 amperes by this meter. The value of shunt-resistance is
Options
(a) 2Ω
(b) 0.2Ω
(c) 2 kΩ
(d) 20Ω
Correct Answer:
2Ω
Explanation:
We know, I / Is = 1 + G / S
750 / 100 = 1 + 13/S
S = 2Ω
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A motorcycle moving with a velocity 72 kmh⁻¹ on a flat road takes a turn
- Lumen is the unit of
- A long solenoid has 500 turns. When a current of 2 ampere is passed through it
- Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons.
- A layer of glycerine of thickness 1 mm present between a large surface area of 0.1 m².
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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