Physics Review Current Electricity

Electricity Review

C. Ruberti 2022-23

An electric current is a flow of electric charges. The steady flow of electricity is called an electric current. A current will move along a wire or a path called a circuit. Circuit means to “go around.”

circuit that is not complete and no electric energy flows through the circuit

Open Circuit

the circuit is complete and electric energy flows through the circuit

Closed Circuit

Circuits Can be Opened or Closed

Some text here about the topic of discussion

Multiple Choice

Which statement best explains why the lamp does not glow? 

• Circuit 1 is an open circuit.

•  Circuit 1 is a closed circuit.

•  The negative terminal of Circuit 1 is connected to the cell.

• The positive terminal of Circuit 1 is connected to the cell.

Multiple Choice

When _____ flow in a path, electricity is produced.

• electrons

• protons

• neutrons

Multiple Choice

An electric ______ is the PATH that along which electrons flow.

• current

• circuit

• field

• force

Multiple Choice

Are the lights on in this circuit?

• yes, the lights are on

• no, the lights are off

Circuits

� A series

circuit is a
circuit that
has only
one path for
the current.

� A parallel

circuit has
more than
one path for
current to
travel.

� Lights in our

homes are
wired in
parallel
circuits.

Parellel Circuit

Series Circuits

� Christmas Tree lights are examples of a

series circuit. If one light goes out, they all
go out.

Multiple Choice

In a _________ circuit, if one bulb goes out then the entire circuit doesn't work.

• Series

• Parallel

Multiple Choice

If the light bulb in the middle burned out, what would happen to the other two?

• The light bulb to the left would stay lit, but the one to the right would turn off.

• They would both stay lit.

• The light bulb to the right would stay lit, but the one to the left would turn off.

• They would both turn off.

Multiple Choice

What type of circuit is shown in the image?

• series

• parallel

Multiple Select

Select both of the parallel circuits.

Multiple Choice

What type of circuit is shown in the image?

• series

• parallel

Multiple Select

Select both of the series circuits.

� AC- Alternating

Current- Electron flow
in one direction and
then in the opposite
direction. Ex.
Appliances (prongs)

� DC- Direct Current –

Electrons flow in one
direction. Electrons
move to the repelling
negative terminal to the
positive terminal. Ex.
Battery

Multiple Choice

The movement of electrons is called _____.

• electric charge

• electric force

• electric field

• electric current

Multiple Choice

Electric current that flows in only one direction. 

• Voltage 

• Direct Current 

• Alternating Current

• Series Circuit 

Conductor

�A conductor is a

material that current
can pass through easily,
like metals.

Resistor

�A resistor is a material

that resists, but doesn’t
stop the flow of current.

Insulator

�An insulator is a

material that current
cannot pass through
easily, like plastic.

Multiple Choice

A material in which electrons are not able to move easily 

• Circuit 

• Insulator 

• Resistance 

• Conductor

Multiple Choice

A material in which electrons are able to move easily

• Circuit

• Insulator 

• Resistance 

• Conductor 

Multiple Choice

What is this in the picture?

• Plastic sticks

• Wires that carry electricity

• Skipping rope

Electric Cell

� An electric

cell supplies
energy to
move
charges
through a
circuit, like a
battery.

Multiple Choice

Which of these circuits will not allow the lightbulb to light up