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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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- Two similar springs P and Q have spring constants Kp and Kq, such that Kp>Kq.
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In intrinsic semiconductor at room temperature number of electrons and holes are
- Two similar springs P and Q have spring constants Kp and Kq, such that Kp>Kq.
- The ratio of radii of planets A and B is K₁ and ratio of accelerations
- An open pipe resonates with a tuning fork of frequency 500 Hz. It is observed
- A concave lens of focal length f forms an image which is 1/3 times the size
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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