Potential Difference

Voltage is measured in __.

• volts.
• watts.
• coulombs. 

If the voltage across the battery was 10V in this diagram. What would the voltage across each bulb be?

• 10V
• 5V
• 20V
• 0V

What is the rule for voltage in a parallel circuit?

• stays the same
• adds up
• inverse of the sum of the reciprocals

The difference in electrical potential energy between two places is called

• resistance
• friction
• induction
• voltage

Adding more bulbs to a series circuit will make each bulb burn less brightly.

• True
• False

Adding more bulbs to a parallel circuit will make each bulb burn less brightly.

• True
• False

The lamps are identical.  What is the voltage across each lamp?

• 6 V
• 12V
• 3 V
• 2.5 V

If the cell provides 12 volts and there are four identical bulbs, each bulb will use ___ volts.

• 12
• 1
• 4
• 3

The voltage across each bulb is 9V.  What is the voltage across the cell?

• 4.5
• 9
• 18
• 27

What is the voltage across the bottom lamp?

• 3 V
• 6 V
• 12 V
• 18 V