Magnetic Effects Of Current Question 13
Question: Assertion : Torque on the coil is the maximum, when coil is suspended in a radial magnetic field. Reason : The torque tends to rotate the coil on its own axis.
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:
The torque on the coil in a magnetic field is given by t = nIBA cos q For radial field, the coil is set with its plane parallel to the direction of the magnetic field B, then q = 0o and cos q = 1
Þ Torque = nIBA (1) = nIBA (maximum).
BETA
