1. | Putting in parallel, a resistance of \(24~ \Omega\) |
2. | Putting in series, a resistance of \(15~ \Omega\) |
3. | Putting in series, a resistance of \(240~ \Omega\) |
4. | Putting in parallel, a resistance of \(15~ \Omega\) |
The resistance of an ammeter is 13 Ω and its scale is graduated for a current up to 100 A. After an additional shunt has been connected to this ammeter, it becomes possible to measure currents up to 750 A by this ammeter. The value of shunt resistance is:
1. 20
2. 2
3. 0.2
4. 2 k