What is current?
The flow of electric charge through a circuit
What unit is current measured in?
Amperes (A).
What device is used to measure current?
ammeter
How is an ammeter connected in a circuit?
In series
What is voltage?
energy transferred per unit of charge
What unit is voltage measured in?
Volts (V).
What device measures voltage?
voltmeter
How is a voltmeter connected in a circuit?
In parallel.
What is resistance?
A measure of how much a component slows the flow of current
What unit is resistance measured in
Ohms (Ω)
How does increasing resistance affect current?
Current decreases.
What happens to current when more bulbs are added in series?
Current decreases
What happens to current when more bulbs are added in parallel?
Current increases (Bulb stays bright)
What is a conductor?
A material that allows electricity to flow easily.
What is an insulator?
A material that does not allow electricity to flow easily
Give one example of a conductor
Copper (or aluminium, steel
Give one example of an insulator
Plastic (or rubber, wood, glass
What is a series circuit
circuit where components are connected one after another in a single loop
What is a battery?
A device that provides voltage to push current around a circuit.
What is a parallel circuit?
circuit with multiple branches for current to flow through.
What happens if one bulb breaks in a series circuit
The whole circuit stops working
What is electrical power
The rate at which electrical energy is used
What happens if one bulb breaks in a parallel circuit?
The other branches still work.
What is a short circuit?
path with little or no resistance that causes a large current to flow.
