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 = ΔV/d for a uniform field between parallel plates.
State the field direction from higher to lower electric potential.
Check units when calculating electric field strength between plates.

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Study D.2.9—Parallel-plate field conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

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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