Unit 11 · ElectricityOhm's Law
Words of This Topic
- Potential difference (V): the energy needed to move a unit charge between two points, measured in volts (V)
- Current (I): the charge flowing per unit time, measured in amperes (A)
- Resistance (R): the property of a conductor that opposes the flow of charge, measured in ohms (Ω)
- Proportional: when one quantity grows, the other grows in the same ratio
- Collision: the bumping of moving charges into the atoms of a conductor
- Derived unit: a unit built from base units, such as the ohm
- Nichrome: an alloy with high resistance, used in heater coils