Question

A rectangular coil ABCD which is rotated at a constant angular velocity about a horizontal axis as shown in the figure. The axis of rotation of the coil as well as the magnetic field \( B \) are horizontal. Maximum current will flow in the circuit when the plane of the coil is

• A. inclined at 30 degrees to the magnetic field
• B. perpendicular to the magnetic field
• C. inclined at 45 degrees to the magnetic field
• D. parallel to the magnetic field

Hint:

Maximum induced current occurs when the coil's plane is parallel to the magnetic field.

Answer 1

The Correct Option is D

Step 1: Understanding Faraday's Law.
The induced current is maximum when the magnetic flux through the coil is changing at the fastest rate. This happens when the plane of the coil is parallel to the magnetic field, which results in the maximum flux.

Step 2: Conclusion.
Thus, the correct answer is option (D).

Final Answer: \[ \boxed{\text{(D) parallel to the magnetic field}} \]