an electron is emitted with negligible speed from the negative plate of the parallel plate capacitor charged to potential difference V.the seperation between the plates is d and magnetic field B exists in space (coming out of the plane and perpendicular to it).show that the electron will fail to strike the upper plate ifd> (2mV / eB2)1/2 m=mass of electrone=charge of electron...plz help
an electron is emitted with negligible speed from the negative plate of the parallel plate capacitor charged to potential difference V.the seperation between the plates is d and magnetic field B exists in space (coming out of the plane and perpendicular to it).show that the electron will fail to strike the upper plate ifd> (2mV / eB2)1/2 m=mass of electrone=charge of electron...plz help