Embibe Experts Solutions for Chapter: Electromagnetic Induction, Exercise 1: Gujarat Board-2020

In a.c. generator induced emf at $\mathrm{t}=0$. the induced emf at the time $\frac{\pi }{\omega }$ is_____________.

A magnet is moving towards a coil and the emf induced in the coil is$\epsilon$. If the coil also starts moving at the same speed, the induced emf will be:

The dimensional formula of self inductance is 

A small square loop of wire of side $1 \mathrm{mm}$ is placed inside a large square loop of wire of side $10 \mathrm{m}$. The loops are coplanar and their centres coincide. Find the mutual inductance of the system. $({\mu }_{\circ }=4\mathrm{\pi }\times {10}^{-7}\mathrm{S}.\mathrm{I}.)$.

What is called self-inductance? Derive an expression for self-induced emf.