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A potentiometer wire has length 4m resistance 8Ω. The resistance that must be connected in series with the wire and an accumulator of emf 2V, so as to get a potential gradientof 1mV per cm on the wire is
Options
(a) 32Ω
(b) 40Ω
(c) 44Ω
(d) 48Ω
Correct Answer:
32Ω
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A layer of colourless oil spreads on water surface. White light is incident on it
- A boat of mass 40 kg is at rest.A dog of mass 4 kg moves in the boat
- A step down transformer is used on a 1000 V line to deliver 20 A at 120 V
- In an AC generator, a coil with N turns, all of the same area A and total resistance R,
- Magnetic flux φ (in weber) linked with a closed circuit of resistance 10 Ω varies
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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