Question

A galvanometer can be converted into an ammeter of desired range by connecting a:

• A. small resistance in series
• B. large resistance in series
• C. small resistance in parallel
• D. large resistance in parallel

Hint:

To convert a galvanometer into an ammeter, use a shunt — a low resistance connected in parallel — so it can handle larger currents without damage.

Answer 1

The Correct Option is C

A galvanometer is a sensitive device that can measure very small currents. To convert it into an ammeter (which can measure large currents), we need to bypass most of the current around the galvanometer to prevent damage. This is achieved by connecting a shunt — a small resistance in parallel with the galvanometer. The majority of the current flows through this low-resistance path, while only a small, safe current flows through the galvanometer. This setup ensures the galvanometer safely measures current over a broader range.