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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
- The thermo e.m.f. E in volts of a certain thermocouple is found to vary
- When a charged oil drop moves upwards in an electric field,
- Two coherent monochromatic beams of intensities I and 4I respectively, are superposed.
- A fringe width of a certain interference pattern is β=0.002 cm. What is the distance
- A body projected vertically from the earth reaches a height equal to earth’s radius
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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