Electric Circuits and Current Flow

Front

What is an electric circuit?

Back

An electric circuit is a closed loop that allows electric current to flow, consisting of a power source, conductors, and a load (like a light bulb).

Front

What is the difference between a series circuit and a parallel circuit?

Back

In a series circuit, components are connected end-to-end, so the same current flows through all components. In a parallel circuit, components are connected across common points, allowing current to divide among them.

Front

What happens to the current in a series circuit when one component fails?

Back

If one component fails in a series circuit, the entire circuit is broken, and all components stop working.

Front

What happens to the current in a parallel circuit when one component fails?

Back

If one component fails in a parallel circuit, the other components continue to operate normally.

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 are conductors and insulators?

Back

Conductors are materials that allow electric current to flow easily (e.g., copper, aluminum). Insulators are materials that resist the flow of electric current (e.g., rubber, glass).

Front

What is a battery?

Back

A battery is a device that stores chemical energy and converts it into electrical energy to provide power to a circuit.

Front

What is voltage?

Back

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

Front

What is resistance?

Back

Resistance is 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 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): V = I × R.