railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Potentiometers
A dc potentiometer is designed to measure up-to about 2 V with a slide wire of 1600 m. Standard cell of emf 1.2 V balances at 1200mm. a test cell is seen to balance at 1400 mm. The emf of the test cell is
1
1.1 V
2
1.2 V
3
1.7 V
4
1.4 V