With the aid of a labelled diagram, describe Thomson’s experient for determining specific charge.

• The electrons are produced thermionically by a hot filament cathode and are accelerated towards a cylindrical anode and pass through it.
• The small hole on the anode confines the electrons to a narrow beam.
• When both the electric field and the magnetic field are off, the electrons reach the screen at X and cause fluorescence.
• If the velocity of the electrons on emerging from the anode is u then

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Dr. Bbosa Science