Understanding Electric Currents and Circuits

Front

What is an electric current?

Back

An 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 a circuit?

Back

A circuit is a closed loop that allows electric current to flow, consisting of a power source, conductors, and components such as resistors or switches.

Front

What is the role of a switch in a circuit?

Back

A switch is a component that can open or close a circuit, controlling the flow of current.

Front

What is resistance?

Back

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

Front

What is Ohm's Law?

Back

Front

How do you calculate power in an electrical circuit?

Back

Front

What is the formula for calculating total resistance in parallel resistors?

Back

Front

What is the unit of electric current?

Back

The unit of electric current is the ampere (A).

Front

What is the unit of voltage?

Back

The unit of voltage is the volt (V).

Front

What is the unit of power?

Back

The unit of power is the watt (W).