Embibe Experts Solutions for Chapter: Moving Charges and Magnetism, Exercise 1: Exercise

Two parallel wires separated by $2 \mathrm{m}$ carry currents of $3\mathrm{A}$ each in the opposite directions. Find the magnetic induction for the points between the wires at a distance $50 \mathrm{cm}$from each wire.

A galvanometer of resistance $50 \Omega$ produces full-scale deflection for a current of $0.15 \mathrm{A}$. Determine the value of shunt required to make it an ammeter of range of $1.5 \mathrm{A}$ and  $5 \mathrm{A}$.

An ammeter and a voltmeter of suitable ranges are to be used to measure the current and voltage of an electric lamp. If a mistake were made and the meters are interchanged what will happen? Explain.

Describe the working of cyclotron. Draw the diagram showing path of particle in both "Dees" Derive expression for frequency of cyclotron.

An electron accelerated by a potential difference of $300 \mathrm{V}$ is moving at a distance of $4 \mathrm{mm}$ from a long, straight wire. If a current of $5 \mathrm{A}$ flows through the wire, what will be the force acting on the electron ?

With the help of a diagram, explain the principle and working of a cyclotron. Show that cyclotron frequency does not depend on the speed of the particles.

An electron is moving with a speed of$3.0 \mathrm{x} {10}^7 {\mathrm{ms}}^{-1}$ along a circle in a magnetic field of  $0.50 \mathrm{N} {\mathrm{A}}^{-1} {\mathrm{m}}^{-1}$. Calculate the radius of the circle and the kinetic energy of the electron.

Why can't a cyclotron accelerate electrons?