Class 12 Physics Chapter 6 - Electromagnetic Induction MCQ and Assertion Questions

A square loop of side 0·50 m is placed in a uniform magnetic field of 0·4 T perpendicular to the plane of the loop. The loop is rotated through an angle of 60° in 0·2 s. The value of emf induced in the loop will be :

A square loop of side 50 cm is placed in a uniform magnetic field of 3·0 T acting perpendicular to the plane of the loop. If the loop is rotated through an angle of 90° in 0·3 s, the value of emf induced in the loop would be :

A square loop of side L lies in the x-y plane in a magnetic field \(\vec{B}\) = \(B_{0}\)(2 \(\hat{i}\) + 3 \(\hat{j}\) + 4\(\hat{k}\)), where \(B_{0}\) is a constant. The magnetic flux through the loop is :

A metallic rod of 1 m length is rotated with a frequency of 40 rev/s, with one end hinged at the centre and the other end at the circumference of a circular metallic ring of radius 1 m, about an axis passing through the centre and perpendicular to the plane of the ring. A constant and uniform magnetic field of 0·5 T parallel to the axis is present in the region. The value of emf induced between the centre and the metallic ring is close to :