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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
- The half life of radium is 1620 yr and its atomic weight is 226 kg per kilo mol.
- Three solids of masses m₁,m₂ and m₃ are connected with weightless string
- The equations of motion of a projectile are given by x=36 t metre and 2y=96t-9.8t²
- Three resistances 2Ω, 3Ω and 4Ω are connected in parallel. The ratio of currents passing
- An ideal heat engine works between temperature T₁=500 K and T₂=375 K.
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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