How many electrons are there in on coulomb of negative charge?

Options

A. `1.6 xx 10^19`
B. `6.25 xx 10^20`
C. `6.25 xx 10^20`
D. `6.25 xx 10^18`

Explanation

To find out how many electrons are there in one coulomb of negative charge, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Charge of an Electron**:
The charge of a single electron is approximately \( e = 1.6 \times 10^{-19} \) coulombs. This is a fundamental constant in physics.

2. **Define the Total Charge**:
We are interested in finding out how many electrons correspond to a total charge of \( Q = 1 \) coulomb.

3. **Use the Formula**:
The number of electrons \( n \) can be calculated using the formula:
\[ n = \frac{Q}{e} \]
where \( Q \) is the total charge and \( e \) is the charge of one electron.

4. **Substitute the Values**:
Now, substituting the values into the formula:
\[ n = \frac{1 \text{ coulomb}}{1.6 \times 10^{-19} \text{ coulombs}} \]

5. **Calculate the Number of Electrons**:
Performing the calculation:
\[ n = \frac{1}{1.6 \times 10^{-19}} \approx 6.25 \times 10^{18} \]

6. **Conclusion**:
Therefore, there are approximately \( 6.25 \times 10^{18} \) electrons in one coulomb of negative charge.

### Final Answer:
There are approximately \( 6.25 \times 10^{18} \) electrons in one coulomb of negative charge.

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