To convert a galvanometer into an ammeter
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → a very small resistance is added in parallel with the galvanometer
To convert a galvanometer into an ammeter, it must be able to measure large currents without being damaged. This is done by connecting a very small resistance in parallel (called a shunt) so most of the current bypasses the galvanometer.
Correct option: a very small resistance is added in parallel with the galvanometer