Electric Motor

What is a series circuit?

• A circuit that only operates with a single power source.

• A circuit that has multiple paths for electrons to flow.

• A circuit that includes a power source, wires, a device being powered, and a single path for electron flow.

• A circuit that requires at least two switches to operate.

What happens to a series circuit when the power source burns out?

• The circuit temporarily stops and then restarts.

• The circuit continues to operate without interruption.

• The circuit stops operating until the power source is replaced.

• The circuit automatically switches to a backup power source.

What is the function of a switch in a series circuit as described in the diagram?

• It increases the flow of electrons.

• It opens or closes the circuit, controlling the flow of electrons.

• It changes the direction of electron flow.

• It generates additional electrical power.

How can the simple switch in the series circuit be modified for enhanced functionality?

• By adding a battery.

• By replacing it with a rotary switch that can open and close the circuit as it spins.

• By connecting it to multiple devices.

• By removing it entirely from the circuit.

Is this a series circuit?

• Yes, it is a series circuit.

• No, it is a parallel circuit.

• It is both series and parallel.

• It is neither series nor parallel.

When does the motor have a complete or closed circuit?

• When the battery is disconnected.

• When the switch is off.

• When the switch is on.

• When the motor is at rest.

When does the motor have an open circuit?

• When the switch is on.

• When the battery is disconnected.

• When the switch is off.

• When the motor is running.

Are the disc magnets in the motor polarized, having a north and a south pole?

• Yes, they are polarized.

• No, they are not polarized.

• They only have a north pole.

• They only have a south pole.

What happens to the coil when it is energized with electricity from the battery?

• It becomes demagnetized.

• It repels the disc magnets.

• It creates a magnetic field.

• It stops conducting electricity.

What happens when two magnets with like poles facing each other are placed in close proximity?

• They attract each other.

• They repel each other.

• Nothing happens.

• They become demagnetized.

Tags

NGSS.MS-PS2-5

NGSS.MS-PS2-3