Learning objectives
- Relate field strength and potential in uniform fields.
- Use inverse-square behavior for point-charge field predictions.
- Reason about direction and sign conventions for electric fields.
Interactive practice
Electric Field Explorer
Focus: Move the probe deliberately and explain trend changes before checking the displayed values.
Welcome back
Continue your saved run?
Your progress is ready.
Case 0 / 6
Score 0 / 0
00:00
Session not started yet. Choose a mode and press Start Session.
Observation logCompare what changed0 saved
Change one variable, save another reading, then compare the evidence.
Scroll sideways to compare readings.
Fair-test check
Study lensRelate field strength and potential in uniform fields.
Try this
Move the probe deliberately and explain trend changes before checking the displayed values.
Learn to
- Relate field strength and potential in uniform fields.
- Use inverse-square behavior for point-charge field predictions.
- Reason about direction and sign conventions for electric fields.
Exam transfer
Governing idea
E = F/q and E = −dV/dr. For a point charge, E = kQ/r² and V = kQ/r; between ideal parallel plates, E ≈ ΔV/d.
Model boundary
The probe is a negligible positive test charge. Point charges are idealized and edge effects are ignored in the central parallel-plate model.
Avoid this trap
Electric potential is a scalar; electric field is a vector. Zero potential does not necessarily mean zero field.
Practice run
Choose a mode and checkpoint count when you want scoring.
Choose your checkpoint count for guided or challenge mode.
Field setup
More controls
What you'll train
Use this when
- A Level electric fields revision
- Students mixing up E-V relationships
Next practice
Shortlist kept on-topic for this simulation and exam level.
Your progress on this device
Progress for this simulation stays on this device/browser only.