A circular loop (area = 0.20 m²)turns in a uniform magnetic field with B = 0.13 T.At an instant when the angle between the magnetic field and the normal to the plane of the loop is π rads and is decreasing at the rate of 0.50 rad/s,what is the magnitude of the emf induced in the loop? A)zero B)13 mV C)26 mV D)20 mV

Question

Quizplus · Accepted Answer

When the angle between the magnetic field and the normal to the plane of the loop is π radians, the magnetic flux through the loop is zero because the loop is perpendicular to the field lines. Therefore, the rate of change of magnetic flux is zero, resulting in zero induced emf.

A Circular Loop (Area = 0