A long cylindrical wire carries a positive charge of linear density `lambda`. An electron `(-e ,m)` revolves around it in a circular path under the influence of the attractive electrostatic force. Find the speed of the electron.

A long cylindrical wire carries a positive charge of linear density 2.0 x 10^(-8) C m^(-1). An electron revolves around it in a circular path under the influence of the attractive electrostatic force. Find the kinetic energy of the electron. Note that it is independent of the radius.

A long cylindrical wire carries a positive charge of linear density 2.0 x 10^(-8) C m^(-1). An electron revolves around it in a circular path under the influence of the attractive electrostatic force. Find the kinetic energy of the electron. Note that it is independent of the radius.

A long cylindrical wire carries a positive charge of linear density 2.0 xxx 10^(-8) C m^(-1). An electron revolves around it in a circular path under the influence of the attactive electrostatic force. Find the kinetic energy of the electron. Note that it is independent of the radius.

There is one long line charge with linear charge density lambda . One electron is moving in a circular path around this line charge. Plane of the circle is perpendicular to line charge and line charge passes through centre of circle. Prove that kinetic energy of electron is independent to the radius of a circle.

An electron is revolving around a proton in a circular path of diameter 0.1 nm. It produces a magnetic field 14 Wb m^-2 at the proton. The angular speed of the electron is

In a hydrogen atom, an electron of charge e revolves in an orbit of radius r with speed v. Find the magnitude of the resulting magnetic moment of the electron.

An indinitely long positively charged wire has a linear charge density lambda cm^(-1) . An electron is revolving around the wire as its center with a constant velocity in a circular plane perpendicular to the wire. Deduce the expression for KE of electron. Plot a graph of K.E as a function of charge density lambda .

A long straight wire carries a charge with linear density lamda . A particle of mass m and a charge q is released at a distance r from the the wire. The speed of the particle as it crosses a point distance 2r is