Circuits Series and Parallel

Pick the correct sentence.

• This circuit will work because it is a closed circuit.

• Energy will freely flow in this circuit.

• This circuit will not work because there is no energy source.

• This circuit will not work because there is no switch.

In a parallel circuit, if one connection is broken, all of the connections stop working.

• True

• False

A parallel circuit

• has only one path for current to travel

• has more than one path for current to travel

• does not allow electricity to travel through it

• has magnets that cause electric current

What is the energy source for a circuit?

• Light bulb

• Battery

• Wire

• Switch

The two light bulbs pictured above in the circuit diagram have the same resistance.

This means that the voltage across light bulb A is____________ the voltage across light bulb B.

n the parallel circuit diagram below, the top branch has 2Ω

of resistance and the bottom branch has 4Ω

of resistance. State which branch has a larger voltage across it.

• The top branch

• The bottom branch

• Each branch has the same voltage across it

Use your knowledge of parallel circuits to complete the following sentences:

the same as

greater than

less than

The two light bulbs pictured above have the same resistance.

This means that the current through light bulb A is-------------the current through light bulb B.

Use your knowledge of parallel circuits to complete the following sentences:

the same as

less than

greater than

In the diagram below, light bulb A has a lower resistance than light bulb B.

This means that the current through light bulb A is-----------the current through light bulb B.

In the circuit below, the battery supplies 4 V to the light bulbs. This is a parallel circuit with two branches. Identify the voltage across each of the light bulbs.

• 2 V

• 1 V

• 6 V

• 4 V

Tags

NGSS.MS-PS3-5

In the circuit below, the battery supplies 18 V

to the light bulbs. This is a parallel circuit with three branches.

Identify the voltage across each of the light bulbs.

• 9 V

• 18 V

• 6 V

• 21 V