Embibe Experts Solutions for Chapter: Alternating Current, Exercise 1: Jharkhand Board-2020

In a series $LCR$ circuit $L=8 \mathrm{H}$, $C=0.5 \mathrm{\mu F}$ and $R=100 \mathrm{\Omega }$. The resonant frequency of the circuit is

A $60 \mathrm{\mu F}$ capacitor is connected to a $110 \mathrm{V}$, $60 \mathrm{Hz}$ a.c. supply. Determine the root-mean-square value of the current in the circuit.

The phase difference between current and voltage in an A.C. circuit containing inductance only is.

Define reactance and impedance in A.C. circuits. Derive expression for instantaneous current in a series L-C-R circuit if connected to an alternating emf.

The phase difference between current and voltage in an ac circuit containing resistance only is

Derive an expression for average or mean value of alternating current for half cycle.

Derive an expression for root mean square value of alternating current for one full cycle.

What is a transformer? Describe the principle, construction and working method of a transformer.