Embibe Experts Solutions for Chapter: Electromagnetic Induction, Exercise 1: Exercise

Prove that the dimensions of emf are same as those of rate of change of magnetic flux.

A copper loop and an aluminium loop are removed from a magnetic field in the same time-interval. In which loop will the induced emf and induced current be greater?

A rectangular conducting loop moves horizontally in a uniform magnetic field $\overrightarrow{\mathrm{B}}$ perpendicular to its plane.

Will there be any induced current in the loop or any work required to move the loop, if the loop is completely in the field?

A rectangular conducting loop moves horizontally in a uniform magnetic field $\overrightarrow{\mathrm{B}}$ perpendicular to its plane.

If the loop is partially out of the field, then?

A rectangular conducting loop moves horizontally in a uniform magnetic field $\overrightarrow{\mathrm{B}}$ perpendicular to its plane.

What if the loop is stationary and the field changes with time?

A straight conductor of length $0.4 \mathrm{m}$ is moved with a speed $7 {\mathrm{ms}}^{-1}$ along the direction of a uniform magnetic field. What will be the emf induced, If any, across its ends?

A train is moving with uniform speed from north to south. Will any potential difference be induced between the ends of its axle?

The induced potential difference across the axle of a train is always the same whether it goes in north-south direction, or east-west direction or any other direction. Explain with reason.