Electric Current and Ohm's Law

Front

What is electric current?

Back

The flow of electric charge in a conductor, usually carried by electrons in a metallic wire.

Front

How is electric current measured?

Back

In amperes (A) using an ammeter.

Front

What is the direction of conventional current?

Back

The flow of positive charge.

Front

What does Ohm’s Law state?

Back

The current (I) flowing through a conductor is directly proportional to the voltage (V) across it and inversely proportional to its resistance (R), given by the formula I = V/R.

Front

What are the two classifications of electric current?

Back

Direct current (DC) and alternating current (AC).