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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 transformer having efficiency of 90% is working on 200 V and 3kW power supply
- When a spring is extended by 2 cm energy stored is 100 J. When extended further by 2 cm
- In Wheatstone bridge, three resistors P,Q and R are conncected in three arms
- If the value of potential in an A.C circuit is 10 V, the peak value of potential is
- When one of the slits of Young’s experiment is covered with a transport sheet
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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