| ASSERTION: The magnetic field produced by a current carrying solenoid is independent of its length and cross sectional area. |
| REASON: The magnetic field inside the solenoid is uniform. |
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: B
Solution :
The magnetic field produced by solenoid is given by, \[B=\frac{1}{2}{{\mu }_{0}}nI\left[ \cos {{\theta }_{1}}-\cos {{\theta }_{2}} \right]\] Which is independent of its length and cross sectional area?
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