CURRENT ELECTRICITY

What is an electric current?

• a build up of electrons

• the difference in charge between 2 points

• the flow of electrons across a circuit

• opposition to the flow of electrons

What is the unit we use to measure electric current?

• ampere (amp)

• ohm

• volt

• newton

If the voltage is increased and the resistance stays the same, current will ____.

• Increase
• Decrease
• Stay the same
• Not enough info

The light bulb does not turn on, which statement explains why it is not working?

• The battery is dead

• The light bulb is broken

• The bell is taking all of the energy

• The light bulb is not part of a complete circuit

Mrs. Rodriguez has a battery, wooden spoon, copper wire, metal paperclip, and a light bulb. Which materials does Mrs. Rodriguez need in order to create a complete circuit?

• battery, wooden spoon, copper wire, and light bulb

• battery, metal paperclip, copper wire, and light bulb

• metal paperclip, copper wire, and light bulb

• battery, wooden spoon, and light bulb

Which electric circuit contains several paths for electricity to flow?

• conductor

• series circuit

• parallel circuit

• open circuit

An incomplete circuit is shown.
To complete the circuit, a wire should be placed from —

• Point D to Point C
• Point B to Point C
• Point A to Point D
• Point B to Point D

This circuit has a battery, buzzer, and switch. When the switch is turned on, the buzzer will produce sound because -

• The turned on switch will provide energy to the buzzer.

• The turned on switch will decrease the resistance in the circuit.

• Electrical energy will be absorbed completely by the buzzer when the switch is turned on.

• Electric charges will flow in a complete path when the switch is turned on.

Which of the following can work as an energy source?

• Battery
  
• Light bulb
• Wire
  
• All of them

Choose the correct sentence.

• This circuit will work because it is an open circuit.
• This circuit will work because it is a closed circuit.
• This circuit will NOT work because it is an open circuit.
• This circuit will NOT work because it is a closed circuit.