If a body contains `n _ 1 ` electrons and ` n_2 ` protons then what is the total charge on the body ?

Explanation

To find the total charge on a body that contains \( n_1 \) electrons and \( n_2 \) protons, we can follow these steps:

### Step 1: Understand the Charge of Electrons and Protons
- The charge of one electron is \( -e \), where \( e = 1.6 \times 10^{-19} \) coulombs.
- The charge of one proton is \( +e \).

### Step 2: Calculate the Total Charge from Protons
- If there are \( n_2 \) protons, the total positive charge contributed by the protons is:
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