Define electric field strength in terms of force per unit charge.
A uniform electric field is created by a potential difference of $1200\,\text{V}$ across two parallel metal plates in a vacuum, as shown in Fig. 4.1. The gap between the plates is $14\,\text{mm}$. A particle P with charge $3.2 \times 10^{-19}\,\text{C}$ and mass $6.6 \times 10^{-27}\,\text{kg}$ starts from rest at the lower plate and is moved vertically to the upper plate by the electric field. Calculate the electric field strength between the plates.
Calculate the work done on P by the electric field.
Calculate the gain in gravitational potential energy of P.
A uniform electric field is created by a potential difference of $1200\,\text{V}$ across two parallel metal plates in a vacuum, as shown in Fig. 4.1. The separation of the plates is $14\,\text{mm}$. A particle $P$ with charge $3.2 \times 10^{-19}\,\text{C}$ and mass $6.6 \times 10^{-27}\,\text{kg}$ starts from rest at the lower plate and is moved vertically to the upper plate by the electric field. Calculate:
the increase in kinetic energy of $P$.
the speed of $P$ when it reaches the upper plate.