Embibe Experts Solutions for Chapter: Electromagnetic Induction, Exercise 1: KEAM 2019

The relation between the charge flow $\mathrm{\Delta Q}$ through the circuit of resistance $\mathrm{r}$ and the change in the magnetic flux ${\mathrm{\Delta \varphi }}_{\mathrm{B}}$ is

A magnetic field of $1 \mathrm{T}$ applied at an angle $\frac{\pi }{3}$ to the vertical direction is decreased to zero at a steady rate in one second. The magnitude of induced emf in a horizontally placed circular loop of radius $5 \mathrm{cm}$ is given by

A train is running at a speed of $72\mathrm{km} {\mathrm{hr}}^{-1}$ on the rails separated by a distance of $150\mathrm{cm}.$ If the vertical component of earth's magnetic field at the place is $4.0\times {10}^{-5}\mathrm{T}$ The induced emf on the rails is

The dimension of mutual inductance is (Denote dimension of current as $A)$

An oscillator circuit contains an inductor $0.05 \mathrm{H}$ and a capacitor of capacity $80 \mathrm{\mu F}$. When the maximum voltage across the capacitor is $200 \mathrm{V}$, the maximum current (in amperes) in the circuit is