Physics notes
1. Power = voltage x current
2. Energy = voltage x current x time (in second)
3. Work = voltage x current x time (in second)
4. Current = Charge/time (in seconds)
5. Electromotive force is the electrical work done by a source and moving a unit charge
around the complete circuit
6. Direction of electric field is the direction of force on a positive charge
7. Potential difference is the work done by a unit charge passing through a component
8. Electric field is the region around the charged particle in which the electrical force of
the particle is present
9. AC current - direction can change
10. Time period = 1 / frequency
11.Speed = frequency x wavelength
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