Two identical small plastic balls are rubbed against a piece of wool such that both of them received approximately `2 xx 10^12` and `2.5 xx 10^12` electrons respectively. Now both the charged balls are kept at a distance of 25 cm in air. Calculate the nature and magnitude of force between both the balls

Explanation

To solve the problem step by step, we will follow these procedures:

### Step 1: Calculate the charges on the balls
The charge on each ball can be calculated using the number of electrons transferred and the charge of a single electron.

1. **Charge of one electron (e)**:
\[
e = 1.6 \times 10^{-19} \text{ C}
...