Resistance
What are conductors?
Conductors are materials that allow an electrical charge to flow through them.
What are insulators?
Insulators are materials that do not allow the passage of electrical charge.
What is electrical resistance?
Electrical resistance is the resistance offered by a conductor against the flow of current.
What is a resistor?
A resistor is an electrical component that is connected in a circuit to offer resistance against the flow of current in order to control the current and voltage in the circuit.
List four factors that influence the resistance of a conductor.
1. TYPE OF MATERIALS
e.g copper wire has greater
current than nichrome wire.
2. LENGTH OF CONDUCTOR
Longer wires offer more
resistance than shorter wires.
3. THICKNESS OF THE CONDUCTOR
Thinner wires offer more
resistance than thicker wires.
4. TEMPERATURE OF THE.
CONDUCTOR
Hotter wires offer more
resistance than colder wires.