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 voltage?

Back

Voltage, measured in volts (V), is the electric potential difference between two points. It is the force that pushes electric charges through a circuit.

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). It can be expressed as V = I × R.

Front

What is resistance?

Back

Resistance is a measure of the opposition to the flow of electric current, measured in ohms (Ω). It determines how much current will flow for a given voltage.

Front

What is a circuit?

Back

A circuit is a closed loop that allows electric current to flow. It consists of a power source, conductors, and a load (like a light bulb or motor).

Front

What is a series circuit?

Back

A series circuit is a type of electrical circuit in which components are connected end-to-end, so that the current flows through each component in turn.

Front

What is a parallel circuit?

Back

A parallel circuit is a type of electrical circuit in which components are connected across common points or junctions, allowing current to flow through multiple paths.

Front

What is a solar panel?

Back

A solar panel is a device that converts sunlight (electromagnetic radiation) into electricity through the photovoltaic effect.

Front

What energy transformation occurs in a toaster?

Back

In a toaster, electrical energy (e-) is transformed into heat energy (H) to toast the bread.

Front

What energy transformation occurs in a light bulb?

Back

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