The induced emf can be produced in a coil by A. moving the coil with uniform speed inside uniform magnetic field B. moving the coil with non uniform speed inside uniform magnetic field C. rotating the coil inside the uniform magnetic field D. changing the area of the coil inside the uniform magnetic field Choose the correct answer from the options given below:
Options

Question

The induced emf can be produced in a coil by A. moving the coil with uniform speed inside uniform magnetic field B. moving the coil with non uniform speed inside uniform magnetic field C. rotating the coil inside the uniform magnetic field D. changing the area of the coil inside the uniform magnetic field Choose the correct answer from the options given below:

Options

G1 Physics · Accepted Answer

Induced emf is produced only when magnetic flux linked with the coil changes: ε = −dΦ(B)/dt A. Uniform motion entirely inside a uniform magnetic field does not change flux. B. Non-uniform motion entirely inside the same uniform field also need not change flux if area and orientation are unchanged. C. Rotating the coil changes the angle between area vector and B, so flux changes. D. Moving the coil from a uniform-field region into a non-uniform-field region changes the linked flux. Therefore C a…