In a thermionic diode, a heated metal filament (the cathode) releases charged particles that are then accelerated through a vacuum towards an anode.
What are these emitted particles?
α\alphaα-particles
electrons
protons
positrons
114 exam-style questions on CIE IGCSE Physics 5.1.1a Structure of the atom and ions. Each one has a worked solution and a mark scheme showing where the marks go.