Answer:
Electrical charge and current
There are two types of current - direct and alternating. In a direct current, the flow of electrons is consistently in one direction around the circuit, in an alternating current, the direction of electron flow continually reverses.
Charge
Electrons are negatively charged particles and they transfer energy through wires as electricity.
Charge is a property of a body which experiences a force in an electric field. Charge is measured in coulombs (C).
Since electrons are so small and one electron will not have much of an effect anywhere, it is more useful to refer to large groups of electrons. One coulomb of charge is equivalent to 6,250,000,000,000,000,000 electrons.
Current
In a closed circuit that includes a source of potential difference (voltage) there will be a current flowing around the circuit.
Electrical current in a metal is a flow of electrons
When current flows, electrical work is done and energy transferred. The amount of charge passing a point in the circuit can be calculated using the equation:
charge = current × time
Explanation:
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