An electron is moving with a velocity of `10^(7) m s^(-1)`. Find its energy in electron volts. (Mass of electron `=9.1xx10^(-31) kg` and charge of electron `=1.6xx10^(-19) C`)

An electron enters electric field of 10^4V//m perpendicular to the field with a velocity of 10^7m//s . Find the vertical displacement of electron after 2 milliseconds. Mass of electron =9*1xx10^(-31)kg , charge on electron =1*6xx10^(-19)C .

Consider the charge configuration as shown in the figure . Calculate the electric field at point A. If an electron is placed at points A, what is the acceleration exerienced by this electron? (mass of the electron =9.1xx10^(-31) kg and charge of electron =-1.6xx10^(-19)C).

The voltage across the electrodes of a cathode ray tube is 1000 V . Calculate the speed of the electron. Given mass of an electron =.1xx10^(-31)kg and charge on electron =1.6xx10^(16)C .

If the free electron density of copper is 8.6xx10^(28)m^(-3) and resistivity of copper at room temperature is 1.7xx10^(-6)Omega cm , find the relaxation time for the free electrons of copper. Given, mass of electron =9.1xx10^(-31) kg , and charge of electron =1.6xx10^(-19)C .

If mass of an electron is 9.1xx10^(-31) kg, the number of electrons in 1 mg is

An electron is accelerated by a potential difference of 12000 volts. It then enters a uniform magnetic field of 10^(-3)T applied perpendicular to the path of electron. Find the radius of path. Given mass of electron =9xx10^(-31)kg and charge on electron =1.6xx10^(-19)C

If the free electron density of copper is 8.6xx10^(28)m^(-3) and resistivity of copper at room temperature is 1.7xx10^(-6)Omega cm , find the relaxation time for the free electrons of copper. Given, mass of electron =9.1xx10^(-31) kg , and charge of electron =1.6xx10^(-19)C. Boltzmann's constant k = 1.38 xx 10^-23 J K^-1

An X- ray tube operates at 27 kV . Find the maximum speed of an electron striking the anticathode. Given mass of electron =9xx10^(31)kg and charge on electron =1.6xx10^(-19)C .