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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
- The value of workdone for rotating a magnet of magnetic moment M by an angle θ in external
- The masses of three wires of copper are in the ratio 1:3:5 and lengths
- When volume of a system is increased two times and temperature is decreased
- A nucleus ᴢXᴬ emits an α- particle with velocity v. The recoil speed of the daughter
- If alternating source of primary coil on transformer is replaced by a Laclanche cell
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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