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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 Si and a Ge diode has identical physical dimensions. The bandgap in Si is larger
- A rod of 10 cm length is moving perpendicular to uniform magntic field of intensity
- Initial pressure and volume of a gas are P and 800cc. If the final volume is 100cc
- On observing light from three different stars P, Q and R, it was found that intensity
- The self-inductance of a choke coil is 10 mH. When it is connected with a 10 V DC source,
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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