Question

Given below are two statement: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : If an electric dipole of dipole moment 30 x 10-5 Cm is enclosed by a closed surface, the net flux coming out of the surface will by zero.
Reason R : Electric dipole consists of two equal and opposite charges.
In the light of above, statements, choose the correct answer from the options given below:

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R true but R is NOT the correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Answer 1

The Correct Option is A

Solution:
Using Gauss's Law: \[ \Phi = \frac{Q_{\text{in}}}{\epsilon_0} \] Since the electric dipole has no net charge (it consists of equal and opposite charges), the net charge \( Q_{\text{in}} = 0 \). Hence, the net flux \( \Phi = 0 \). Thus, Assertion A is true. Reason R states that an electric dipole consists of two equal and opposite charges, which is true. Thus, both Assertion A and Reason R are true, and Reason R correctly explains Assertion A. Therefore, the correct answer is \( \boxed{1} \).