Embibe Experts Solutions for Chapter: Electromagnetic Induction, Exercise 1: Rajasthan Board-2018

The length of side of a square loop is $4\mathrm{m}$. This loop is placed in an uniform magnetic field of $2.5 \mathrm{T}$. Outside the loop, the magnetic field is zero and it is coming out side from magnetic field perpendicularly with velocity $2 \raisebox{1ex}{$\mathrm{m}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{s}$}\right.$. Find the value of induced $\mathrm{emf}$ in loop after one second.

Write Lenz's law. Lenz's law obey's law of conservation of energy. Explain.

Derive an expression for induced $\mathrm{emf}$ in a rod rotating in a uniform magnetic field. Draw necessary diagram.

Define magnetic flux?

Obtain an expression for the induced $\mathrm{emf} \mathrm{e}={\mathrm{e}}_{\mathrm{o}}\sin \mathrm{\omega t}$ generated due to the rotational motion of the rectangular coil in the uniform magnetic field. Draw a graph between induced $\mathrm{emf} \text{'}\mathrm{e}\text{'}$ and time $\text{'}\mathrm{t}\text{'}$.