Science - Chapter 3 Electricity

Electric current cannot flow in a series circuit if

• the circuit contains an insulator.
• there is a break in the circuit.
• the circuit contains a resistor.
• the circuit has only one loop in it. 

What will happen in a parallel circuit if one of its loops is broken?

• electric current will not flow through any of the loops/
• electric current will still flow through the broken loop.
• electric current will still flow through the unbroken loops.
• the energy source will stop providing energy to move electric charges. 

A washing machine is an example of transforming 

• electricity into motion energy
• motion energy into electric energy
• electricity into light
• heat into motion energy

Which of the following is caused by the energy of motion?

• resistor
• friction
• conductor
• filament

Which of the following uses resistors to transform electricity into heat?

• a toaster
• a car engine
• a gas stove
• a wind turbine

True or False

Glass is a good conductor of electricity.

• true

• false

True or False

For a current to flow, electric charges must complete a loop, or a circuit.

• true

• false

True or False

Many objects transform energy as they work.

• true

• false

True or False

Energy can be created and destroyed.

• true

• false

A material through which an electric charge moves slowly

• parallel circuit
• insulator
• conductor
• series circuit