Two vertical metal plates in a vacuum are separated by a distance of 0.12 m.
Fig. 4.1 shows a side view of this arrangement.
[Figure 4.1]
Each plate has a length of 2.0 m. The potential difference between the plates is 900 V. The electric
field between the plates is uniform.
A negatively charged sand particle is released from rest at point X, which is a horizontal distance
of 0.080 m from the top of the positively charged plate. The particle then travels in a straight line
and collides with the positively charged plate at its lowest point Y, as illustrated in Fig. 4.1.

Q: What topic does this question test?

This question tests Electric fields in A-Level Physics (syllabus code 9702). It is worth 13 marks.

Q: Which exam paper is this question from?

This question appeared in the Cambridge A-Level Physics May/June 2019 examination, Paper 2 Variant 3 (9702_s19_qp_23.pdf).

Question

Two vertical metal plates in a vacuum are separated by a distance of 0.12 m.
Fig. 4.1 shows a side view of this arrangement.
[Figure 4.1]
Each plate has a length of 2.0 m. The potential difference between the plates is 900 V. The electric
field between the plates is uniform.
A negatively charged sand particle is released from rest at point X, which is a horizontal distance
of 0.080 m from the top of the positively charged plate. The particle then travels in a straight line
and collides with the positively charged plate at its lowest point Y, as illustrated in Fig. 4.1.

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