railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Indicating Instruments Basic DC Ammeter
An ammeter has a current range of 0-5 A, and its internal resistance is 0.2 Ω. In order to change the range to 0-25 A, we need to add a resistance of
1
0.8 Ω in series with the meter
2
1.0 Ω in series with the meter
3
0.04 Ω in parallel with the meter
4
0.05 Ω in parallel with the meter