Module 2 Lesson 2

A magnet formed when electric current flows through wire wrapped in coils around an iron is a

• resistor

• circuit

• electromagnet

• battery

A switch in a circuit __________.

• acts as an insulator

• absorbs electricity

• allows or stops the flow of electricity

• keeps the flow of electricity at a safe level

Which can change mechanical energy into electrical energy?

• a switch

• an electormagnet

• a transformer

• a generator

A flow of electrical charges is know as ______.

• resistance

• electrical current

• static electricity

• voltage

When a light bulb lights up in an electrical circuit, _____.

• light is transformed into electrical energy

• electrical energy is transformed into light and heat

• light and heat are transformed into electrical energy

• there is no energy transformation

Which is a device that produces electric current by spinning an electric coil between the poles of a magnet?

• generator

• switch

• magnetic engine

• battery

A path through which electric current can flow is called a _____.

• circuit

• electromagnet

• switch

• generator

Which best describes the flow of energy in the complete circuit?

• lightbulb, wire, battery, lightbulb

• battery, wire, lightbulb, battery

• battery, lightbulb, battery, lightbulb

• wire, battery, wire, battery

Which of the following cannot be converted into electricity?

• motion cause by wind

• solar energy from the sun

• an open switch in a circuit

• stored energy in fossil fuels

An electric current is a flow of electricity through a conductor.

• True

• False