Brainpop Electric Circuits

What is the function of a power source in a circuit?

• it provides a steady source of static electricity

• it provides a means through which the circuit can be broken

• it provides a path along which the electricity can flow

• it provides a steady flow of electrons

What is a current?

• a steady flow of electricity

• a short burst of electricity

• a wire along which electricity flows

• a power source that supplies electricity

What might happen if wires weren't insulated?

• The power source would no longer provide a flow of electrons.

• We'd be in danger of harm electric shocks.

• Current electricity would become static electricity.

• The circuit would be broken.

Which of the following is an example of a load?

• electrical outlet

• battery

• wires

• toaster oven

What device opens and closes an electric circuit?

• a switch

• a power source

• a load

• a current

When an electric current runs through a wire, a magnetic field is induced…

• around the wire.

• parallel to the wire.

• under the wire.

• through the wire.

Tags

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The faster the magnet moves through the coil

• the stronger the induced current

• the weaker the induced current

• there is no change in the current

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What is the relationship between electricity and magnetism? Choose the best answer.

• Electricity is a form of magnetism.

• Magnetism is a form of electricity.

• Electricity can be converted to magnetism and vice versa.

• They are not closely related at all.

Tags

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What might happen if transformers didn't exist?

• The electricity in your house might have an extremely high voltage

• Electricity could not be distributed through power lines to people's homes

• Electricity could not be created at power plants

• The direction of the electric current in your home might switch back and forth

What is the role of a resistor in an electric circuit?

• To increase the current flow

• To decrease the current flow

• To store electrical energy

• To convert electrical energy into light