Value of charge on a body which carries 10 excess electrons is …………..

Explanation

To find the value of the charge on a body that carries 10 excess electrons, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Charge of One Electron**:
The charge of a single electron is denoted as \( e \) and is equal to approximately \( -1.6 \times 10^{-19} \) coulombs. The negative sign indicates that the electron carries a negative charge.

2. **Calculate the Total Charge from Excess Electrons**:
Since the body has 10 excess electrons, we can calculate the total charge \( Q \) on the body due to these electrons. The formula to find the total charge from multiple electrons is:
\[ Q = n \times e \]
where \( n \) is the number of excess electrons.

3. **Substitute the Values**:
Here, \( n = 10 \) (the number of excess electrons) and \( e = -1.6 \times 10^{-19} \) coulombs. Therefore, we can substitute these values into the formula:
\[ Q = 10 \times (-1.6 \times 10^{-19}) \]

4. **Perform the Multiplication**:
Now, we multiply:
\[ Q = -16 \times 10^{-19} \text{ coulombs} \]
This can also be expressed in scientific notation:
\[ Q = -1.6 \times 10^{-18} \text{ coulombs} \]

5. **Conclusion**:
The total charge on the body due to the 10 excess electrons is:
\[ Q = -1.6 \times 10^{-18} \text{ coulombs} \]

### Final Answer:
The value of charge on the body which carries 10 excess electrons is \( -1.6 \times 10^{-18} \) coulombs.

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