5 x 1012 electrons are added to a body that already has a negative charge of 2.2 uC. Calculate the final charge on this body.


Enter answer:  +/- __________  uC  (Include correct polarity, blank for positive charge or - for negative charge)

To calculate the final charge on the body after adding 5 × 10¹² electrons to a body that already has a charge of -2.2 µC, we can follow these steps:

1. **Charge of 1 electron**: The charge of a single electron is approximately \(-1.6 \times 10^{-19}\) coulombs.
   
2. **Total charge of added electrons**: 
   \[
   \text{Total charge of electrons} = 5 \times 10^{12} \times (-1.6 \times 10^{-19}) = -8 \times 10^{-7} \, \text{C} = -0.8 \, \mu C
   \]

3. **Initial charge**: The body already has a negative charge of \(-2.2 \, \mu C\).

4. **Final charge**: 
   \[
   \text{Final charge} = \text{Initial charge} + \text{Charge of added electrons}
   \]
   \[
   \text{Final charge} = -2.2 \, \mu C + (-0.8 \, \mu C) = -3.0 \, \mu C
   \]

### Answer:
The final charge on the body is **-3.0 µC**.

Would you like further details or have any questions?

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**Related Questions:**

1. What happens to a body when you add electrons to it?
2. How does the magnitude of charge compare between protons and electrons?
3. What is the significance of the charge being negative?
4. What units are commonly used for electric charge?
5. How does the number of added electrons affect the final charge of a body?

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5 x 10¹² electrons are added to a body that already has a negative charge of 2.2 µC. Calculate the final charge on this body.

Enter answer: +/- __________ µC (Include correct polarity, blank for positive charge or - for negative charge)

Learn how to calculate the final charge on a body after adding 5 × 10¹² electrons to an initial charge of -2.2 µC. This example explains the addition of electric charges, using the charge of an electron and conservation of charge principles. Suitable for Grades 9-12 physics students.

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