| Assertion (A): Gauss's law of magnetism is different from Gauss's law of electrostatics. |
| Reason (R): Isolated electric charge can exist but isolated magnetic pole cannot exist. |
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 true
Correct Answer: A
Solution :
| Option [a] is correct. |
| Explanation: In electrostatics. Gauss's law : |
| = \[\int \vec{E}.\vec{d}A=\frac{q}{{{\varepsilon }_{0}}}\] |
| Gauss's law of magnetism: |
| \[\int \vec{B}.\vec{d}A=0\] |
| Gauss's law of magnetism is different from |
| Gauss's law of electrostatics. Hence, the assertion is true. |
| Electric charge may or may not exist in pair. But magnetic poles always exist in pair. |
| No magnetic monopole exists. This is the reason why Gauss's law of magnetism is different from Gauss's law of electrostatics. So, the reason is also true and explains the assertion. |
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