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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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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Water falls from a height of 60m at the rate of 15 kg/s to operate a turbine
- If a solid sphere of mass 1 kg and radius 0.1 m rolls without slipping at a uniform
- The velocity v of waves produced in water depends on their wavelength λ, the density
- A tuning fork frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second
- A charge Q is uniformly distributed over a large plastic plate. The electric field
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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