railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Potentiometers
Current in a circuit is measured using a simple slide wire. What will be the Voltage drop per unit length
if the standard cell is of emf 2.38 V balanced at length of 35 cm ?
1
0.68 V/cm
2
0.068 V/cm
3
68 V/cm
4
6.8 V/cm