Electrical circuits

What is an electrical circuit?

• a closed path where electricity flows

• Does not let electricity flow through it

• When a bulb does turn on

Which of the following can work as an energy source?

• Lightbulb

• Switch

• Wire

• Battery

Tags

NGSS.4-PS3-2

What is the difference between a conductor and an insulator?

• A conductor is magnetic and an insulator is not

• An insulator is magnetic and a conductor is not

• A conductor allows electricity to flow through it easily and an insulator does not.

• An insulator allows electricity to flow through it easily and a conductor does not

Tags

NGSS.MS-PS2-5

A great conductor of energy is:

• plastic

• metal

• cloth

• wood

What object would best complete this circuit?

• a paper clip

• a pen

• a battery

• piece of plastic

A class prepared some electrical circuits using battery, connecting wires, and three light bulbs.  Which of these circuits can make the three bulbs light?

• A
• B
• C
• D

Tags

NGSS.4-PS3-2

A student builds a circuit made up of a battery, two light bulbs, and a switch. What will the student most likely observe in this circuit?

• Light bulb 1 and light bulb 2 will both be on

• Light bulb 1 will be off, but light bulb 2 will be on

• Light bulb 1 and light bulb 2 will both be off

• Light bulb 1 will be on, but light bulb 2 will be off

Tags

NGSS.4-PS3-2

The diagram shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut a the point shown by the arrow?

• 0

• 1

• 2

• 3

A string of lights with small bulbs is shown below. The bulbs are connected by wire that is covered in an insulator. When the lights are on, electricity travels in....

• a complete circuit

• a sound wave

• a light ray

• an incomplete path

In the picture, if you replace the paper clip with a plastic spoon, what happens? 

• The bulb doesn't light
• The bulb is dimmer
• The wires get hot
• There is no charge