Question

In which condition EMF will be induced in loop.
**Situation-S 1: **A loop is moving with uniform velocity in a uniform magnetic field perpendicular
to its plane.
**Situation-S 2: **A loop is moving with non-uniform velocity in a uniform magnetic field
perpendicular to its plane.
**Situation-S 3: **A loop is rotating about its diameter in a uniform magnetic field.
**Situation-S 4: **Area of loop is changing in a uniform magnetic field.

• A. S2,S3
• B. S1,S3
• C. S2,S4
• D. S3,S4

Answer 1

Answer: (D)

S3,S4

Answer 2

S1, S2 $\to$ The Flux remains constant
S3 $\to$ Φ= BA cos θ [Here, θ is changing]
S4 $\to$ The area is changing $\to$ The EMF induces