Understanding Amperes and Electric Current

What is the basic unit of electric current in the metric system?

• Volt

• Ampere

• Watt

• Ohm

In Ohm's law, which symbol represents current?

• I

• R

• A

• V

How is an ampere defined in terms of charge and time?

• 1 Ampere is 1 Ohm per second

• 1 Ampere is 1 Watt per second

• 1 Ampere is 1 Coulomb per second

• 1 Ampere is 1 Volt per second

What is the charge of an electron in Coulombs?

• 1.6 x 10^-18 C

• 1.6 x 10^-17 C

• 1.6 x 10^-19 C

• 1.6 x 10^-16 C

If a circuit has a current of 2.5 amperes, how many Coulombs of charge pass through it in 5 minutes?

• 300 Coulombs

• 600 Coulombs

• 1500 Coulombs

• 750 Coulombs