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A potentiometer wire of length 10 m and resistance 10 Ω per metre is connected in series with a resistance box and a 2 volt battery. If a potential difference of 100mV is balanced across the whole length of potentiometer wire, then the resistance introduced in the resistance will be
Options
(a) 1900Ω
(b) 900Ω
(c) 190Ω
(d) 90Ω
Correct Answer:
190Ω
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 body is thrown with a velocity of 9.8 m/s making angle of 30° with the horizontal
- The near point and far point of a person are 40 cm and 250 cm, respectively.
- A Carnot engine takes heat from a reservoir at 627⁰C and rejects heat
- What is the nature of Gaussian surface involved in Gauss’s law of electrostatics?
- The wavelength of kα, X-rays produced by an X-ray tube 0.76Å. The atomic number
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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