Electric charge investigation
Make the invisible
visible.
Predict, test, observe and explain. Explore electron transfer, induction, earthing, conductivity and electric fields through evidence—not just animations.
Investigation 1
Transfer charge by friction
Explain charging as electron transfer and apply attraction and repulsion.
Drag the cloth across the rod. Touch and keyboard controls work too.
Predict first
When polythene is rubbed with wool, what moves?
Investigation 2
Control a gold-leaf electroscope
Distinguish induction, charging by contact and charging using Earth.
Follow a valid sequence. The state and net charge update after every action.
Investigation 3
Test conductors and insulators
Classify samples with a circuit and explain results using mobile electrons.
Investigation 4
Map an electric field
Interpret direction and relative strength using force on a positive test charge.
Move the + test charge. Arrow direction shows force; length shows relative strength.
Assessment
Check your learning
Answer everything before revealing feedback.