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An electron in potentiometer experiences a force 2.4×10⁻¹⁹N. The length of potentiometer wire is 6m. The emf of the battery connected across the wire is (electronic charge=1.6×10⁻¹⁹C)
Options
(a) 6V
(b) 9V
(c) 12V
(d) 15V
Correct Answer:
9V
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two bodies of masses m₁ and m₂ are initially at rest at infinite distance apart
- Dimensions of resistance in an electrical circuit, in terms of dimension of mass M,
- A carnot engine working between 300 K and 600 K has a work output of 800J per cycle.
- An ac voltage is applied to a resistance R and an inductor L in series
- A sample of HCl gas is placed in an electric field of 5 x 10⁴ N/C
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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Formula Used: EMF = Force*distance/charge , given in HC Verma (Electric Current in conductors)
Plugging all the values give the value of EMF to be 9V.