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Current Electricity |
Electricity needs to follow a path for it to flow. The path that electricity follows is a circuit. Current electricity is electricity that flows through a circuit. Current electricity is moving electrical charge. Current electricity will flow through a closed circuit. No current will flow through an open circuit. A switch in a circuit allows one to open or close a circuit by moving a handle. Amperes are units that measure how much current is flowing in a circuit. Resistors are not good conductors because current does not flow easily through resistors. The resistor in a bulb makes it light up because the electrical energy changes into heat and light as it flows through the resistor.
Dry cells and wet cells produce current. They both have chemical reactions taking place inside them that produce negative particles that can flow through a conductor as electric current. There are two paths through which electricity can flow. A series circuit has two objects connected in a single path and electricity flows in one way. A parallel circuit has each object connected separately to the cell. A series circuit will not work when a part is removed. A parallel circuit will work when a part is removed because there’s a complete circuit.
A fuse is a device that prevents electrical current from flowing through wires of a building and creating an open circuit which stops the current. Circuit breakers are a switch that protects circuits. It creates open circuits when dangerously large current flows through them.
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