Fig. 8.1 illustrates a device that is used to demonstrate the force on an electron in an electric field.
(a)[2]
Explain how this apparatus produces a continuous flow of electrons from the filament.
(b)[2]
When an electron is placed in an electric field, it experiences a force. This force acts in the direction opposite to the electric field. Describe how the metal plates in Fig. 8.1 can be used to demonstrate this.
Worked solution & mark scheme
This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Heating the filament causes thermionic emission” …