Notes on current electricity

1. Electric current is the rate of charge flow. The symbol is I.

2. Current equation: I = Q ÷ t
I=the current in ampere
Q=the total amount of charge moving past a point in a conductor (coulombs)
T=the time taken (second)

3. The base unit of current is C/s, this Is called ampere

4. Electrical energy always originates from other energies, it can change these easily produced forms to the form we need.

5. Common sources of electrical energy: chemical, mechanical, thermal, or light energy.

6. The conductor carries energy is the same with pipes carry water.

7. Electric circuit is a closed loop which an electric current exists or is intended or able to flow.

8. According to Ampere’s law, an electric current produces a magnetic field.

9. This is a picture of a electric circuit. Electron current flow along the circuit wire from the negatively charged terminal toward the positive terminal, opposite to the direction of the conventional current.

10. Common conductors: copper, silver, aluminum