A moving coil galvanometer can be converted into ammeter by connecting:
Correct answer: B. A low resistance in parallel
- A. A low resistance in series
- B. A low resistance in parallel
- C. A high resistance in series
- D. None of these
Explanation
This option is correct. To convert a moving coil galvanometer into an ammeter, a low resistance, known as a shunt resistor, is connected in parallel with the galvanometer coil. The shunt resistor provides a low-resistance path for most of the current to bypass the galvanometer coil. As a result, the majority of the current flows through the shunt resistor, allowing the ammeter to measure currents of higher magnitude than the galvanometer's full-scale deflection current. The galvanometer itself provides only a small fraction of the total current, allowing it to accurately measure the current passing through it without being overloaded.
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