write the condition under which an electron will move undeflected in the presence of crossed electric and magnetic fields?also explain your answer
The electron will move undeflected in the presence of crossed electric and magnetic field if the electric force on the electron is balanced by the magnetic force acting on the electron ,
Mathematically q E = q V B
Where q - charge
E - electric field
B - magnetic field
V - velocity of the electron
In the given problem q = v (charge on electron )
e E = eVB
Mathematically q E = q V B
Where q - charge
E - electric field
B - magnetic field
V - velocity of the electron
In the given problem q = v (charge on electron )
e E = eVB