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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
- Amout of heat required to raise the temperature of a body through 1 K is called its
- Current in a coil changes from 4 A to zero in 0.1 second and the emf induced is 100V
- The oscillating frequency of a cyclotron is 10 MHz. If the radius of its Dees is o.5 m,
- Two masses of 9 g and 6 g are connected with a string which is passing over a frictionless
- Two closed organ pipes when sounded simultaneously give 4 beats/second.
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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