railway RRB Technician Grade 1 Mock Test 2024 Physics Current, Resistance and Electricity The Ammeter and the Voltmeter
An ammeter reads up to 1A. Its internal resistance is 0.81Ω. To increase the range to 10A, the value of the required shunt resistance is:
1
0.03Ω
2
0.9Ω
3
0.09Ω
4
0.3Ω