Current is a flow of electrical charge. Voltage measures the energy carried by the charge flowing in a circuit. This electrical energy is transferred in the circuit into light, heat and movement.
How is current measured?
With a coulombmeter, in coulombs ( )
With an ammeter, connected in series, in amps ( )
With a voltmeter, connected in parallel, in volts ( )
How is voltage measured?
What happens to the voltage in a circuit if we connect more cells?
Nothing, the voltage stays the same
What kind of circuit is in the diagram?
What happens when more bulbs are added into a series circuit?
They get brighter
The brightness stays the same
They get dimmer
What happens to the other lamps if one breaks in a parallel circuit?
They all go out
The others stay on
Which of the following is an advantage of a parallel circuit?
If you want a warning that one of the components in the circuit has failed
They use fewer wires
You can switch lamps on and off without affecting the circuit
What kind of circuit is the wiring in our homes?
What does the following circuit symbol represent?