P=VI, P = V^2 / R, and P = I^2 / R
The SI unit for Power is Watts.
We also learned about power rating, and how to read an electric meter.
We also got steps to find electrical cost:
- Find power and convert to kW
- find hours
- multiply time by power
- multiply by rate.
Electrical sefety
We learned:
- all voltages are dangerous
- AC is more dangerous than DC
- Electrical shock is a jarring shaking sensations that can cause burns.
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