Question

The additive nature of charge can be explained by the

• A. Law of Quantisation of Electric Charge
• B. Law of Conservation of Electric Charge
• C. Law of Superposition of Electric Charge
• D. None of these

Answer 1

The correct option is C

Law of Superposition of Electric Charge

Step 1. Properties of charge

1. Charge is a scalar quantity. It has only magnitude but no direction
2. Charge can travel from one point to another due to potential difference between the two point
3. Charge is of discrete nature and can be quantised
4. Mathematically $q=ne$ where $n=\pm 1,\pm 2,....$ and $e=1.6\times {10}^{-19}$, $n$ is positive for positive charge and negative for negative charge

Step 2.Explanation for correct option

For option C

1. Law of Superposition of Electric Charge: It states that the total charge on a body is equal to the algebric sum of all charges located at a different points.
2. So Law of Superposition of Electric Charge of charges explains the additive nature of charge.

So option C is true.the

Step 3. Explanation for incorrect options:

For option A

1. Law of Quantisation of Electric Charge: It states that charge can only assume certain discrete values
2. It does not explain the additive nature of the charge. That is to say, the observed value of the electric charge $\left(q\right)$ of a particle will be an integral multiple of $\left(e\right)1.6\times {10}^{-19}C$. That is $q=ne$
3. It does not explain the additive nature of the charge.

So option A is incorrect

For option B

1. Law of Conservation: It states that the total charge in an isolated system remains constant.
2. It does not explain the additive nature of the charge.

So option B is incorrect

Hence, Option C is correct.