Electric Current

Front

What is electric current?

Back

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

Front

What is the relationship between voltage, current, and resistance?

Back

According to Ohm's Law, the relationship is defined as V = I × R, where V is voltage, I is current, and R is resistance.

Front

What happens to current if voltage increases while resistance remains constant?

Back

If voltage increases while resistance remains constant, the current will increase.

Front

What happens to current if resistance increases while voltage remains constant?

Back

If resistance increases while voltage remains constant, the current will decrease.

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).

Front

What factors affect the resistance of a wire?

Back

The resistance of a wire is affected by its length, cross-sectional area (diameter), and temperature.

Front

What is a complete electric circuit?

Back

A complete electric circuit is a closed loop that allows electric current to flow uninterrupted from the power source, through the load, and back to the power source.

Front

What is the role of electrons in electric current?

Back

Electrons are negatively charged particles that flow through a conductor to create electric current.

Front

What is the unit of electric current?

Back

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

Front

What does it mean for a circuit to be 'open'?

Back

An open circuit is one where the path is broken, preventing current from flowing.