Series and Parallel Circuits

What do you use to measure potential difference/voltage?

• Ammeter

• Joulemeter

• Tape measure

• Voltmeter

What does an ammeter measure?

• Charge

• Power

• Current

• Voltage/Potential difference

Is this a series or parallel circuit?

• Series

• Parallel

Is this a series or parallel circuit?

• Series

• Parallel

Is this a series or parallel circuit?

• Series

• Parallel

What happens to the resistance when I put resistors in a series circuit?

• They add up

• The resistance is less

• Nothing changes

• They multiply

What is my resistance in these circuits?

• 2 ohms in both pictures

• 2 ohms in picture 1 and 4 ohms in picture 2

• 4 ohms in both pictures

• 4 ohms in picture 1 and 2 ohms in picture 2

If I put my second 2 ohm resistor in parallel what will happen to the total resistance?

• It will be less because the current will have more paths

• It will still be the same as in series

• It will be more because there are more resistors

In a series circuit the current:

• Is shared between the components (bulbs, resistors, etc)

• Is the same everywhere

In a series circuit I have a 9 volt battery.

What will the potential difference be across each of my two bulbs?