Physics › Section O · Current and circuits › Topic O.1
Electric current
Every phone, lamp and motor runs on charge that moves. Electric current measures how much charge passes a point each second, and it is the starting quantity for everything else in circuits.
In this topic
- Charge on the move
- Defining current
- Worked example: counting electrons
- Conventional current and electron flow
- Drift velocity
- Worked example: drift in a copper wire
- Why the lights come on at once
- Worked example: a phone battery
- Common mistakes to avoid
- Key takeaways
This topic is part of Wuanberri Pro. Checking your access…