What is the unit of electric current?
What is the total resistance in this circuit?

What is the property of a material that opposes the flow of electric current called?
What is the resistance of the light bulb?

Ammeters are always connected in whereas voltmeters are always connected in in circuits.
The diagrams show four circuits.

Which circuit contains two bulbs connected in parallel with each other, and contains an ammeter that measures the total current in the two bulbs?
What happens to the total resistance in a circuit if more resistors are connected in a series?
What happens to the total resistance when a new resistor is added in parallel?
Resistors in series are best described as dividers whereas resistors in parallel are dividers.
Use this circuit to provide values for the following:

The voltmeter reading over the 12 Ω resistor = V.
The total resistance of the parallel network = Ω.
The current in the 12 Ω resistor = A.