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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
- Changing magnetic fields can set up current loops in nearby metal bodies
- The photoelectric threshold wevelength for potassium (work function being 2 eV) is
- A wire mesh consisting of very small squares is viewed at a distance
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- Two capacitors having capacitances C₁ and C₂ are charged with 120V and 200V batteries
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.