| ASSERTION: The resultant magnetic field of circular loop is due to x-component. |
| REASON: In circular loop of wire, perpendicular components of magnetic field at some distance from center of loop turned over the whole loop, the result is zero. |
A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true and reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: A
Solution :
The magnetic field at distance from center of loop, resolved into a component along x-axis and perpendicular to it. When perpendicular components are summed over the whole loop, the result is zero that is, by symmetry any element on one side of the loop sets a perpendicular component that cancels the component set up by an element diametrically opposite it.
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