# -1.6μC charge can be generated on a body by:

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-1.6μC charge can be generated on a body by:
1. Extracting 1013 electrons
3. Extracting 1013 protons

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CONCEPT:

Electric Charge

• It is defined as the intrinsic property of certain fundamental particles like electrons, proton, etc, due to which they produce electric and magnetic effects.
• Types of electric charge
1. ​Positive charge: A body having a deficiency of electrons.
2. ​Negative charge: A body having an excess of electrons.
• Properties of electric charge
• Like charges repel and unlike charges attract each other.
• A charge is a scalar quantity.
• Additivity of charge: If a system contains a number of point charges, then the total charge of the system is obtained simply by adding all the charges algebraically.
• A charge is always quantized.
• A charge will always remain conserved.
• A charge is always associated with mass.
• The unit of charge is the coulomb.

⇒ 1 coulomb= charge on 625 × 1016 electrons

CALCULATION:

Given q = -1.6μC

We know that,

⇒ Charge on 1 electron = -1.6 × 10-19 C

∵ 1.6 × 10-19 C charge can be generated by = 1 electron

∴ 1 C charge can be generated by = $\frac{1}{1.6\;\times\;10^{-19}}$ electron

∴ 1.6 μC charge can be generated by = $\frac{1.6\;\times\;10^{-6}}{1.6\;\times\;10^{-19}}$ electron

• So 1.6μC charge can be generated by = 1013 electrons

Negative charge: A body having an excess of electrons.

• We know that the proton is present in the nucleus so, we can't add or remove protons in the element but we can add or remove electrons from the element.
• So the body can be positively charged by removing electrons and negatively charged by adding electrons.
• A charge cannot be generated by adding or removing protons.
• Since the charge on the body is negative so the electrons will be added.
• Therefore -1.6μC charge can be generated on a body by adding 1013 electrons. Hence, option 2 is correct.