Calculate the velocity with which electrons in a cathode ray tube strike the anode when 30, 000 V is operating between the cathode and anode of the tube. (mass of electron `=9xx10^(-31)kg`, charge of electron `=1.6xx10^(-19) C`).

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 .

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 .

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).

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 )

A cathod ray tube has a potential different of V between the cathod and anode . The speed of the cahtod rays is given by

An electron is projected with an initial velocity of 10^(7)ms^(-1) into an electric field between two parallel plates 1 cm apart. The electron enters the field at a point midway between the plates. If the electron just misses the positivity charged plate as it emerges from the field, find the magnnitude of the electric density between the plates. (Length of each plate is 2 cm, mass of electron= 9xx10^(-31) kg and charge of electron =1.6xx10^(-19) C)

Calculate the mass of 1 mol of electrons if the mass of one electron be 9.11xx10^(-31)kg .