Electric Charge and Current

Define electric current.

• It is the work done by the source in driving charges around a complete circuit.

• It is a measure of the rate of flow of electric charge through a given cross-section of a conductor.

• It is the work done by the source in driving a unit charge around a complete circuit.

• It is a measure of the flow of electric charge through a given cross-section of a conductor.

The continuous flow of electric charges through a material

• electric current

• electric circuit

• voltage

• parallel circuit

An electric current flowing in one direction only

• voltage

• parallel current

• direct current

• electric current

current consisting of charges that move back and forth in a circuit

• alternating current

• direct current

• parallel current

• electric current

A form of energy caused by the movement of electrons

• electricity

• voltage

• electric current

• parallel circuit

The movement of electrically charged particles is 

• electric current

• electric circuit

• electric resistance

What are needed to make a complete closed circuit?

• buzzer, bulb, switch

• battery, buzzer, bulb

• battery, bulb, wires

• switch, bulb, wires, buzzer

Electricity happens when ... move from one place to another.

• battery

• light

• electrons

• electromagnet

What is a battery?

• a power source that gives out electricity

• a device for making and breaking the connection in an electric circuit

• a flexible metal thread to connect parts of an electric circuit

• a beeper or an audio signaling device

How do electrons move in an electric circuit?

• from positive terminal to negative terminal

• from negative terminal to positive terminal

• from positive terminal to positive terminal

• from negative terminal to negative terminal