Electric circuits can be series or parallel. An ammeter measures current and a voltmeter measures a potential difference. Some materials have low resistance and are conductors; others are insulators.
What needs to be done to this circuit so that the lamp lights up?
Close the switch
Add another lamp
Add a cell and close the switch
What component does this circuit symbol represent?
Which switch or switches must be closed to make the lamps light?
Only switch 1
Only switch 2
Switches 1 and 2
If lamp 1 is unscrewed from its holder, what will happen to lamp 2?
It will get brighter
It will go out
It will stay the same brightness
It will stay lit
It will get dimmer
What is wrong with this circuit diagram?
There is only one cell
The ammeter should be connected in series
A ammeter should be connected in parallel
Which ammeter will have the biggest reading?
They will read the same
Which statement about electric current is correct?
It always flows clockwise
It gets used up as it goes around the circuit
It does not get used up as it goes around the circuit
What is the definition of current?
The flow of charge
A measure of the difference in energy
How difficult it is for electrons to flow
Which term is used instead of voltage?