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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
- If the binding energy of the electron in a hydrogen atom is 13.6 eV, the energy
- A particle falls towards earth from infinity. Its velocity on reaching the earth
- Two parallel long wires carry currents i₁ and i₂ with i₁ > i₂ .
- An experiment takes 10 minutes to raise temperature of water from 0⁰C to 100⁰C
- The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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