If a rectangular area is rotated in a uniform electric field from the position where the maximum electric flux goes through it to an orientation where only half the flux goes through it,what has been the angle of rotation?
A) 45°
B) 26.6°
C) 90°
D) 30°
E) 60°

Question

Quizplus · Accepted Answer

The angle of rotation is 60° because when the flux is halved, it implies that the cosine of the angle between the field direction and the normal to the area is 0.5 (since flux = EAcosθ, where E is the electric field strength, A is the area, and θ is the angle). Cosine of 60° is 0.5, indicating the area has been rotated by 60° from its initial position to reach this state.

If a Rectangular Area Is Rotated in a Uniform Electric