You have many projects that require the use of various strength resistors in circuits, so you may want to know about the function, working principle, and what happens if they are left outside.

Let's start with some vocabulary: electricity is the flow of electrons, which are particles with a negative charge.

Voltage is the difference in charge between two points in a circuit. Voltage is also the force behind current.

Current measures the speed of electronic flow.

One simple way to understand the difference between voltage and current is to consider a water tank with a hose attached to the bottom hole. In this case, the water acts as the current. Voltage is the water pressure, and current is the speed of the water flow.

Resistance measures the material's ability to resist the flow of electrons.

If the width of the bottom hose remains constant, then by adding more water to the tank, the water flow rate through the hose will be faster. Similarly, by adding more voltage to a circuit, the current will increase.

However, if a smaller hose is used in place of the hose, the same water pressure will result in a slower water flow. The size of the hose provides resistance, and reduces the current. The resistance of the circuit works in the same way, reducing the current by the elements used in it.

How do resistors resist?

The resistors in the project are through-hole resistor materials designed with two flexible ends for bending and insertion into a breadboard. The core of the resistor manufacturer is formed by winding conductive material in the form of a spiral or helix around an insulating core. The material is very thin, forcing the current to slow down through it, providing resistance. To increase the resistance value, the number of rings in the spiral can be increased.

What would happen if I don't use a resistor?

If the current flowing through the component is too high for the component to handle, it may cause the component to overheat and potentially damage the component, or it may cause damage to the microcontroller. If the appropriate resistor is not used, the LED will burn out very quickly.

If you want to safely see how a resistor material may affect a circuit, but don't want to connect a buzzer to ground with wires, use a resistor instead. You will see that the reduced current will make the buzzer quieter.