A charge of 0.5 nC is placed at the centre of an equilateral triangle of side 10 cm. Calculate the potential at all the three vertices of the triangle.

Explanation

To calculate the electric potential at the vertices of an equilateral triangle with a charge placed at its center, we can follow these steps:

### Step-by-Step Solution:

1. **Identify Given Values**:
- Charge \( Q = 0.5 \, \text{nC} = 0.5 \times 10^{-9} \, \text{C} \)
- Side length of the equilateral triangle \( a = 10 \, \text{cm} = 0.1 \, \text{m} \)

...