Unit 3 Electricity and Magnetism

A property that leads to electromagnetic interactions between the particles that make up matter.

• Electric charge

• Static electricity

• Electric conductor

• Resistance

The buildup of electric charge on an object.

• Voltage

• Static electricity

• Electrical conductor

• Electric current

A material through which charges can move freely.

• Electrical conductor

• Electrical insulator

• Resistance

• Semiconductor

A material through which charges cannot move easily.

• Electrical conductor

• Electrical insulator

• Resistance

• Semiconductor

A special class of materials that conduct electric charge better than electrical insulators but not as well as electrical conductors.

• Electrical insulator

• Electrical conductor

• Resistor

• Semiconductor

The rate of flow of electric charges is called

• Voltage

• Ampere

• Electric current

• Direct current

The amount of work required to move each unit of charge between two points.

• Voltage

• Watt

• Resistance

• Ampere

The opposition to the flow of electric charge is called.

• Voltage

• Resistance

• Alternating current

• Ampere

In direct current, charges always flow in the _______.

• Different direction

• Reverse directions

• Same direction

• No flow at all

Alternating current ___________.

• Reverses direction

• Flows in one direction

• Doesn't flow at all