Question

A uniform but time varying magnetic field is present in a circular region of radius R. The magnetic field is perpendicular and into the plane of the loop and the magnetic of field is increasing at a constant rate $\alpha$. There is a straight conducting rod of length 2R placed as shown in figure. The magnitude of induced emf across the rod is

• A. ${60}^{\circ }$
• B. ${90}^{\circ }$
• C. ${30}^{\circ }$
• D. ${20}^{\circ }$

Answer 1

Answer: (B), (D)

The correct options are
B ${90}^{\circ }$
D ${20}^{\circ }$

Angle = ${45}^{\circ }+{45}^{\circ }={90}^{\circ }$