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Assertion (A): When two bodies are rubbe...

Assertion (A): When two bodies are rubbed together body A acquires `q_(1)` and body B acquires `q_(2)` then `q_(1)+q_(2)=0`
Reason (R): Irrespective charge is enclosed by the surface, total flux through the surface is zero.

A

Both (A) and (R) are true and (R) is the correct explanation of (A).

B

Both (A) and (R) are true but (R) is not the correct explanation of (A).

C

(A) is true but (R) is false.

D

(A) is false and (R) is also false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion (A) and the reason (R) provided. ### Step-by-Step Solution: 1. **Understanding the Assertion (A)**: - The assertion states that when two bodies (A and B) are rubbed together, body A acquires charge \( q_1 \) and body B acquires charge \( q_2 \). It claims that \( q_1 + q_2 = 0 \). - This means that the charges are equal in magnitude but opposite in sign. If body A gains a positive charge \( q_1 \), then body B must gain a negative charge \( q_2 = -q_1 \). 2. **Understanding the Reason (R)**: - The reason states that irrespective of the charge enclosed by a surface, the total electric flux through that surface is zero. - According to Gauss's law, the electric flux \( \Phi \) through a closed surface is given by \( \Phi = \frac{Q_{\text{enc}}}{\epsilon_0} \), where \( Q_{\text{enc}} \) is the total charge enclosed by the surface and \( \epsilon_0 \) is the permittivity of free space. - If \( Q_{\text{enc}} = q_1 + q_2 = 0 \), then the total flux \( \Phi \) through the surface is zero. 3. **Combining the Assertion and Reason**: - Since \( q_1 + q_2 = 0 \) as stated in the assertion, it follows that the total charge enclosed by any closed surface that contains both bodies A and B is zero. - Therefore, according to Gauss's law, the total electric flux through that surface is also zero, which supports the reason provided. 4. **Conclusion**: - Both the assertion (A) and the reason (R) are correct. - Additionally, the reason correctly explains the assertion. ### Final Answer: Both assertion (A) and reason (R) are correct, and the reason is a correct explanation of the assertion. ---

To solve the question, we need to analyze both the assertion (A) and the reason (R) provided. ### Step-by-Step Solution: 1. **Understanding the Assertion (A)**: - The assertion states that when two bodies (A and B) are rubbed together, body A acquires charge \( q_1 \) and body B acquires charge \( q_2 \). It claims that \( q_1 + q_2 = 0 \). - This means that the charges are equal in magnitude but opposite in sign. If body A gains a positive charge \( q_1 \), then body B must gain a negative charge \( q_2 = -q_1 \). ...
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