What is a shunt ? State the functions of the shunt in modiyfying a galvanometer to an ammeter.

Explanation

### Step-by-Step Solution:

1. **Definition of a Shunt:**
A shunt is defined as a low resistance that is connected in parallel with a circuit element. In the context of a galvanometer, it is used to allow a portion of the current to bypass the galvanometer.

2. **Purpose of a Shunt in a Galvanometer:**
A galvanometer is a sensitive instrument that can detect small currents. However, it is not suitable for measuring large currents directly because it could get damaged or give inaccurate readings. To modify a galvanometer into an ammeter (which measures larger currents), a shunt is used.

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