railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Potentiometers AC Potentiometers
A DC potentiometer uses a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balance at 600 mm. A test cell is seen to obtain balance at 660 mm. The emf of the test cell is
1
1.00 V
2
1.30 V
3
1.50 V
4
1.70 V