Electric Current & Ohm's Law P1

Front

What is electric current?

Back

Electric current is the flow of electric charge, typically measured in amperes (A). It represents the movement of electrons through a conductor.

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. It can be expressed as V = I × R.

Front

What is a battery?

Back

A battery is a device that stores chemical energy and converts it into electrical energy through electrochemical reactions.

Front

What are the energy transformations in a battery?

Back

In a battery, chemical energy (C) is transformed into electrical energy (e-).

Front

What is the role of conducting wires in a circuit?

Back

Conducting wires provide a path for electric current to flow, completing the circuit.

Front

What is a light bulb?

Back

A light bulb is an electrical device that converts electrical energy into light energy (EMR) through the process of incandescence or fluorescence.

Front

What are the energy transformations in a light bulb?

Back

In a light bulb, electrical energy (e-) is transformed into light energy (EMR).

Front

What happens to current as resistance increases?

Back

As the resistance of a circuit increases, the current decreases.

Front

What is the standard voltage supplied by most electrical outlets in the U.S.?

Back

Most electrical outlets in the U.S. supply a voltage of 120 Volts.

Front

What is resistance in an electrical circuit?

Back

Resistance is a measure of the opposition to the flow of electric current, measured in ohms (Ω).