Electric Current Assignment

Which sequence lists types of materials in order from least conductive to most conductive?

d.

What is the effect on an electric current when the voltage is increased? An increase in voltage causes the flow of electric current to

increase

Resistance is measured in units called

ohms

Tungsten wire is used as the filament in light bulbs, It glows white-hot as current passes through it. Tungsten is used in light bulbs because its high converts electric energy into light and heat.

resistance

Which factors affect the flow of electric charge? Select two options.

voltage resistance

which materials are good insulators? select three options.

1. glass 2. paper 4. plastic

Which factors affect the resistance of a material? Select three options.

a. length c. thickness d. temp

The basic unit of electric current is the

b. ampere

In order for electric charge to flow, there must be a difference in:

b. electric potential

Sara read in a book that in 1800, the Italian physicist Alessandro Volta observed that two metals connected by a conducting liquid produced a continuous transfer of electrons. This phenomenon was different from the rapid static discharge observed by Benjamin Franklin. Sara's book was describing Volta's observation of:

c. electric current