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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 thin equiconvex lens of refractive index 3/2 and radius of curvature 30 cm
- The e.m.f. of a battery is 2 V and its internal resistance is 0.5 Ω. The maximum
- A spring balance is attached to the ceiling of a lift.A man hangs his bag on the spring
- The frequency of a light wave in a material is 2 x 10¹⁴ Hz and wavelength is 5000Å.
- The wavelength of first line of Balmer series is 6563Å. The wavelength of first line
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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