1. What do you call the materials that allow electricity and heat to flow freely
through them?
A circuit B. conductors
C.electromagne! D. Insulators
2. The following materials are good conductors of heal and electricity EXCEPT one.
Which one is it?
A barbecue sticks
C. metallic paper clips
B. iron nails
D. thumbtacks
3. Why is electrical wiring usually made from copper?
A. It is shiny.
B. It is strong
C. It is not magnetic
D. Il conducts electricity.
4. Why is copper widely used for electrical materials a
A . It is made of metal and aluminum.
B. Itallows electricity to flow through them.
C. It is ductile and good conductor of electricily.
D. It does not allow heat and electricity to flow through them.
5. Which of the following materials does NOT allow the flow of electricily?
A. pins
B. scissors
C. thumbtacks
D. lissue
6. What refers to the complete path that ollows free flow of electricity?
A. battery
B. circuit
C electricity D. magnet
7. Which group of materials are good conductors of eleciricity?
A. glass, paper, rubber
C.. plastic, steel, wood
B. gold, nails, pins
D. brass, collon, pots. 8.What do you call the complete path that allows free flow of electricitya
A. ballery
B. circuit
C. electricity D. magnet
9.which electrical circuit consists of more than one pathway?
A.closed B.open C.parallel D.series
10.what kind of circuit connection shown in the picture?
A.close B.open C.parallel D.series
12.ln a series circuit,what happens when one bulb burns out?
A.the other bulb Will explode
B.the other bulb Will function
C.the other bulb Will continue to light
D.the other bulb Will not function anymore

the number 10 there's the picture ​