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A polythene piece rubbed with wool is fo...

A polythene piece rubbed with wool is found to have a negative charge of `6xx10^(-7)C`. The number of electrons transferred to polythene from wool is

A

`3.75xx10^(10)`

B

`9.6xx10^(10)`

C

`9.6xx10^(12)`

D

`3.75xx10^(12)`

Text Solution

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The correct Answer is:
To find the number of electrons transferred to the polythene from wool, we can use the formula: \[ \text{Number of electrons} = \frac{\text{Total charge}}{\text{Charge of one electron}} \] 1. **Identify the charge of one electron**: The charge of one electron is approximately \(1.6 \times 10^{-19} \, \text{C}\). 2. **Given charge on polythene**: The charge on the polythene piece is given as \(6 \times 10^{-7} \, \text{C}\). 3. **Calculate the number of electrons**: \[ \text{Number of electrons} = \frac{6 \times 10^{-7} \, \text{C}}{1.6 \times 10^{-19} \, \text{C/electron}} \] 4. **Perform the division**: \[ \text{Number of electrons} = \frac{6}{1.6} \times \frac{10^{-7}}{10^{-19}} = 3.75 \times 10^{12} \] 5. **Final answer**: Therefore, the number of electrons transferred to the polythene from wool is approximately \(3.75 \times 10^{12}\).

To find the number of electrons transferred to the polythene from wool, we can use the formula: \[ \text{Number of electrons} = \frac{\text{Total charge}}{\text{Charge of one electron}} \] 1. **Identify the charge of one electron**: The charge of one electron is approximately \(1.6 \times 10^{-19} \, \text{C}\). ...
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