G 9 physical prosperities of electric current

The ampere is the charge transferred by a constant current of one ampere in one

second.

• coulomb

• volt

• joul

Joule = Ampere x Volt.

• Coulomb

• second

• ohm

The unit of measuring the electric charges is volt.

• coloumb

• second

• joul

The unit of measuring the electromotive force (e.m.f.) is the ampere.

• joul

• volt

• newton

Volt is the potential difference across the terminals of a conductor when the work done to transfer a quantity of charge of one coulomb between the two points is one second.

• volt

• ampere

• Joule

The value of the work done to transfer a quantity of electric charges of one coulomb between the two poles of this conductor is the------------

• a ohm.

• b. potential difference.

• c. current intensity.

• d. electric resistance.

The joule equals ----------

• a volt/coulomb.

• b. volt. coulomb.

• c. coulomb/sec.

• d. volt/sec.

The physical quantity which its measuring unit equivalent (joule/volt. second) is --------------

• a. current intensity.

• b. potential difference.

• c. work done.

• d. quantity of electricity.

The measuring unit of the amount of electricity is the coulomb. It doesn't equate with ----------

• a. amp. x sec.

• b. joule / volt

• volt x joule.

• none

To transfer electric charge of 10 coulomb between two points the potential difference between them is 20 volts,

-------------------------- joules are needed.

• 2

• 5

• 20

• 200