I WONDER - What Does A Resistor Do In A Circuit?

A resistor is a component that limits electric current flow in a circuit, similar to a speed bump slowing down cars. Resistors are used to control LED brightness and motor speed by converting electrical energy into heat. Resistance is measured in ohms, and different circuits require resistors with varying ohm values.

What is the primary function of a resistor in an electrical circuit?

• To convert electrical energy into light

• To store electrical energy

• To limit the flow of electric current

• To increase the flow of electric current

How can resistors be compared to speed bumps?

• Both are used to store energy

• Both are used to generate electricity

• Both are used to slow down a process

• Both are used to increase speed

In what applications are resistors commonly used?

• To control the brightness of LEDs

• To increase the speed of electric motors

• To store electrical energy

• To convert heat into electrical energy

What happens to some of the electrical energy when it passes through a resistor?

• It is converted into light

• It is converted into sound

• It is stored as potential energy

• It is converted into heat

How is the resistance of a resistor measured?

• In watts

• In ohms

• In amperes

• In volts