Understanding Voltage, Electric Resistance, and Electric Current
Classified in Physics
Written at on 
English with a size of 1.1 KB.
Voltage: Energy per Electron Provided by the Battery
Energy spent by each electron in a receiver.
Electric Resistance: Opposition of a Material to the Flow of the Electric Current
Electric Current: Number of Electrons that Flow Through the Conductor in 1 Second
Magnitude
- Voltage: V (volts)
- Electric Current: A (amps)
- Resistance: Ω (ohms)
- Power: W (watts)
- Energy: I or KWH (joules)
Alternating Current
- Generated in power plants
- V and I change with time (50 times in 1 second)
- Electrons change their direction of movement
- Consumed by lamps
Direct Current
- Produced by batteries and solar cells
- I and V are constant
- Electrons move always in the same direction
- Consumed by TV, control, alarm clock, calculator, mobile phone, laptop, computer
AC/DC
Effects of Electric Current
- Heat
- Light: incandescent bulbs, fluorescent tubes, light-emitting diodes (LED)
- Electromagnetic Effects
- Sound