IB Physics HL D 2 9 Parallel Plate Field Questions

Practise IB Physics HL D.2.9 by solving parallel-plate field, potential, capacitor and charged-particle equilibrium problems.

Exam points

Use E=V/d to calculate the uniform electric field between parallel plates.
Determine how changes in plate separation or potential difference affect the field strength.
Relate the uniform plate field to force, charge or discharge conditions.

[Maximum number: 1]

Two oppositely charged parallel plates are a distance 8.0 cm apart. The potential difference between the plates is 120 V . An alpha particle is placed on the positively charged plate and released from rest. Gravity is ignored.

Figure for Question IB Physics HL D 2 9 Parallel Plate Field Questions question 1 — IB Physics HL

Calculate the electric field between the plates.

$E=<\frac{120}{8.0 \times 10^{-2}}=>1.5 \times 10^{3} N C^{-1} \boldsymbol{O} \boldsymbol{R} \mathrm{Vm}^{-1}$

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IB Physics HL D 2 9 Parallel Plate Field Questions question 1