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

A capacitor of capacitance $0.5 \mathrm{\mu F}$ is connected to a source of alternating e.m.f. of frequency $100 \mathrm{Hz}$. What is the capacitive reactance? $(\pi = 3.142)$

Prove theoretically, the relation between e.m.f induced in a coil and rate of change of magnetic flux in electromagnetic induction.

At which position of the plane of the rotating coil with the direction of magnetic field, the e.m.f. induced in the coil is maximum?

Assuming expression for impedance in a parallel resonant circuit, state the conditions for parallel resonance. Define resonant frequency and obtain an expression for it.

If a coil of metal wire is kept stationary in a uniform magnetic field, then_______.

What does the negative sign indicate in Lenz’s law?

Distinguish between step- up and step-down transformer.

A parallel $\mathrm{L}-\mathrm{C}$ circuit comprises of a $5\mathrm{H}$ inductor and $5 \mathrm{\mu F}$capacitor. Calculate the resonant frequency of the circuit.