When a current of 1 A pass through a galvanometer, deflection produced in it is........

Answer

To solve the question regarding the deflection produced in a galvanometer when a current of 1 A passes through it, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Galvanometer**: A galvanometer is an instrument used to detect and measure small electric currents. It produces a deflection on a scale when current flows through it.

2. **Current and Deflection Relationship**: The deflection (θ) produced in the galvanometer is directly proportional to the current (I) passing through it. This relationship can be expressed mathematically as:
\[ \theta \propto I \]
This means that as the current increases, the deflection also increases.

3. **Defining Current Sensitivity**: The sensitivity of the galvanometer is defined as the amount of deflection produced per unit of current. This is given by:
\[ \text{Current Sensitivity} = \frac{\theta}{I} \]
where θ is the deflection in radians and I is the current in amperes.

4. **Calculating Deflection for 1 A**: If we know the current sensitivity of the galvanometer (let's denote it as S), then when a current of 1 A passes through the galvanometer, the deflection produced can be calculated as:
\[ \theta = S \times I \]
Substituting I = 1 A, we get:
\[ \theta = S \times 1 = S \]
Therefore, the deflection produced when a current of 1 A passes through the galvanometer is equal to the current sensitivity of the galvanometer.

5. **Conclusion**: The deflection produced in the galvanometer when a current of 1 A passes through it is equal to the current sensitivity of the galvanometer, which is measured in radians per ampere.