| Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
| Assertion [A]: A current / flows along the Length of an infinitely long straight and thin walled pipe. Then the magnetic field at any point inside the pipe is zero. |
| Reason (R): \[\oint{\overrightarrow{B}.d}\,\overrightarrow{l}={{\mu }_{0}}l\] |
A) Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A]
B) Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A]
C) Assertion [A] is true but Reason (R) is false
D) Assertion [A] is false and Reason (R) is also false
Correct Answer: A
Solution :
[a]
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