-Current is the flow of negatively charged elections push away of each other.
- By using the formula (to the left) you can calculate the current. I is the current in amperes (A), Q is the charge in coulombs (C) and t stands for time.
- Alternating current : A current that is continuously moving in different directions- Direct current : A current that only goes in a single direction, from the power supply to the load and back.
-Circuit: The path (cycle) where the electric current starts from the negative side then continuing to the positive side this is called electric current; it can also go the other way around, from positive to negative which is called conventional current. P.S Conventional current is what we're using at school.
Electrical Potential
- Work is done by the energy supply to increase the energy potential from a present to a higher value for every charge of coulomb and as the charge pass the load the energy potential will decrease as the energy is spent.
- Electric potential difference or known as voltage (V) is the electrical potential energy in each coulomb of charge in a circuit.
- Voltage or electric potential difference can be calculated by using the formula V=E/Q or
energy required to increase the electric potential
electric potential difference = charge in coulombs
Supplying
-Electrical energy always start off as another form of energy, however though the use of conversion device we can take that original energy and turn it in to energy used to power of electronics
-Some original forms of energy can be chemical, mechanical (windmills or hydro dams), light (solar) or thermal (heat) energy.
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