Module 4: Electrons, Waves & Photons - Charge & Current

Front

What is Electric Current?

Back

The rate of flow of charge, measured in amperes (A).

Front

What is the formula for Electric Current?

Back

I = ∆Q / ∆t, where I is current (in amps), Q is charge (in coulombs), and t is time (in seconds).

Front

What is Electric Charge?

Back

A property of an object that causes it to experience a force in an electromagnetic field. Charge can be positive or negative.

Front

What is the unit of electric charge?

Back

The coulomb (C).

Front

How is a coulomb defined?

Back

As the electric charge flowing past a point in 1 second when there is a current of 1 ampere.

Front

What is the charge of one electron?

Back

-1.60 x 10^-19 C.

Front

How many electrons are in one coulomb of charge?

Back

6.25 x 10^18 electrons.

Front

What are charge carriers?

Back

Any charged particle, such as protons, electrons, sodium ions, chloride ions, and magnesium ions.

Front

What happens when an object gains electrons?

Back

It produces a negative charge.

Front

What happens when an object loses electrons?

Back

It leaves a positive charge.