IB Physics SL D 2 9 Parallel Plate Field Questions

Practise IB Physics SL D.2.9 by calculating the uniform electric field between parallel plates from potential difference and separation.

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.

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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 SL D 2 9 Parallel Plate Field Questions question 1 — IB Physics SL

Calculate the electric field between the plates.

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

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