Electricity - Multiple Choice Test

A battery keeps its charge with
1. chemicals
2. copper wires
3. magnets
4. water
Conductors are materials that
1. electricity passes through easily
2. electricity cannot pass through
3. lead electricity to the ground
4. you wear to protect yourself
A current that flows in both directions is called
1. an alternating current
2. a changing current
3. an undercurrent
4. a direct current
You can stop a current from flowing by
1. putting a switch into the circuit
2. making the circuit smaller
3. putting liquid into the circuit
4. producing heat in the circuit
Fuses protect wiring from
1. becoming too hot
2. exploding
3. producing too much electricity
4. changing the flow of electrons
In a thunderstorm you should stay inside a car because lightning
1. only hits the metal of the car
2. hits the tires, which have a lightning rod
3. only hits trees and high buildings
4. always hits the glass windows
A kilowatt-hour is the energy
1. of a thousand watts for one hour
2. of one watt for one hour
3. of ten light bulbs for one hour
4. of one hundred watts for one hour
Generators are used to
1. transform mechnical energy into electrical energy
2. transform elelctrical energy into mechanical energy
3. transform steam into electrical energy
4. transport energy to houses
Static energy
1. stays in one place
2. always moves in a closed circuit
3. is only produced by lightning
4. does not have any electrons
Current electricity
1. flows in a conductor
2. flows in an insulator
3. only flows in copper wires
4. can flow in an open circuit
A transformer
1. changes the voltage of electricity
2. protects your house from too much voltage
3. is a power line that transforms electricity
4. changes the amount of watts a device uses
Glass and rubber
1. are good insulators
2. let electrons moved freely and fast
3. are used as electrical circuits
4. are electrical conductors