Introduction to Robotics/Electrical Components/Lecture/Teachers
Lab (For Students) (For Teachers) — Assignment (For Students) (For Teachers) — Quiz (For Students) (For Teachers)
Electricity Flowing in a Circuit
Electricity flows through circuits in the same way as water flows through pipes. Water only flows where the pipes are properly connected. Likewise, electricity will only flow where the components and wires are properly connected.
Notice also that electricity will only flow in a "complete circuit". Electricity must come from a source, and must go to a ground.
There are two quantities that we need to measure when dealing with electricity: Voltage and Current.
- Voltage
- Voltage is a measure of the "pressure" of the electricity. More voltage means more potential for the electricity to flow.
- Current
- Current is a measure of the "amount" of the electricity. More current means more electrons are flowing.
Resistors: Resisting current
Resistors are said to "resist current".