The length of a potentiometer wire is 5 metres. An electron in this wire experiences a…
Physics · JEE Main · NTA Exams — Current Electricity
The length of a potentiometer wire is 5 metres. An electron in this wire experiences a force of 4.8 × 10–19 newton, e.m.f. of the main cell used in potentiometer is
- 3 volt
- 15 volt
- 1.5 volt
- 5 volt
Answer
(B) 15 volt
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