Magnetic Effects Of Current Question 15
Question: Assertion : The magnetic field at the ends of a very long current carrying solenoid is half of that at the center. Reason : If the solenoid is sufficiently long, the field within it is uniform.
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: B
Solution:
For a solenoid $ B_{end}=\frac{1}{2}(B_{in}) $ . Also for a long solenoid, magnetic field is uniform within it but this reason is not explaining the assertion.
BETA
