Physics 9702 · AS & A Level · Potential difference and power
Potential difference and power — practice question
Two vertical metal plates are arranged parallel to one another and connected to a power supply, as shown in Fig. 6.1. The gap between the plates is $16\,\text{mm}$.
(a)[1]
On Fig. 6.1, add at least six field lines to show the electric field between the plates.
(b)[4]
An $\alpha$-particle moves through a vacuum between the two plates. The electric field does work on the $\alpha$-particle. Its kinetic energy increases by $15\,\text{keV}$. Calculate the electric field strength between the plates.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “At least six horizontal field lines, equally spaced, with arrows to the right.” …