Physics: electricity

Question 1

Electricity exists__________

Accepted Answer

in nature

Answer

only if generated by humans

Question 2

Electricity was invented by humans to make them more comfortable

Answer

true

Question 3

Which of these metals is MOST conductive?

Accepted Answer

silver

Answer

gold

Answer

copper

Question 4

metals are good conductors

Answer

true

Question 5

good conductor= bad insulator

Answer

true

Question 6

A material which readily allows electricity to flow through it is called an insulator

Answer

true

Question 7

A material which readily allows electricity to flow through it is called ________

Accepted Answer

a conductor

Answer

an insulator

Answer

a problem

Answer

dangerous

Question 8

What is the MOST expensive conductor?

Accepted Answer

gold

Answer

silver

Question 9

TV screens  are made with one of these conductors. Which one?

Accepted Answer

silver

Answer

gold

Answer

copper

Question 10

In electric appliances, like toasters or chargers,  we cover conductors with good insulators

Answer

true

Question 11

In electric appliances, like toasters or chargers,  we cover conductors with good insulators. Why?

Accepted Answer

To avoid direct contact with conductors and potentially with electricity

Answer

To encourage direct contact with conductors and potentially with electricity

Answer

It was the only thing available when these alliances were invented

Question 12

The best conductors have LOW resistance to electric flows

Answer

true

Question 13

Gold has the LOWEST resistance to electricity

Answer

true

Question 14

We use gold in circuits used in

Accepted Answer

mobiles

Answer

ovens

Answer

electric bikes

Question 15

______________ is the most popular conductor used in home wirings

Accepted Answer

copper

Answer

gold

Answer

silver

Physics: electricity

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