Read Earthing a metal ball
This SOF ISO pattern tests select charge distribution. Read the condition carefully, then use the method below before you solve.
Electricity questions depend on identifying charge, a conducting path and the condition that controls current or magnetic effect.
Separate charge, current and the path between them
Charge is a property · current needs a conducting path
Charge is a property; current needs a conducting path. Decide first whether the question concerns charging, resistance, current or earthing.
Find the tested idea
Identify the material, change or observable property first; this decides the scientific rule to use.
Work from the evidence
Use the experiment or stated observation as evidence. Compare each option with the property, particle model or reaction condition in the stem.
Verify before choosing
Use the wording, diagram and units exactly as given. Select an option only after it satisfies every stated condition.
OlympIQ exam lens
- ✓State the observed property.
- ✓Select the governing idea.
- ✓Test every claim against the evidence.
Keep physical changes, chemical changes and everyday appearances separate.
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