When it comes to understanding electrical circuits, one of the most important concepts to grasp is voltage drop. Voltage drop refers to the reduction in voltage that occurs as current flows through a component in a circuit.

In this article, we’ll explore what voltage drop is and how it relates to the 20 ohm resistor.

## Understanding Voltage Drop

Voltage drop occurs because no component in a circuit is completely conductive. Every component offers some resistance to current flow, which causes energy loss in the form of heat. This resistance results in a reduction in voltage across the component.

The amount of voltage drop across a component depends on its resistance value and the amount of current flowing through it. The higher the resistance value or current flow, the greater the voltage drop will be.

## What is a 20 Ohm Resistor?

A resistor is an electronic component that resists or limits the flow of electric current. Resistance is measured in ohms (Ω). A 20 ohm resistor has a resistance value of 20 Ω.

## What is the Voltage Drop Across the 20 Ohm Resistor

To calculate voltage drop across a 20 ohm resistor, we need to know two things: its resistance value and the amount of current flowing through it.

Let’s assume that there’s 5 volts across our circuit and there’s a total current flow of 0.25 amperes (A).

Using Ohm’s Law (V = IR), we can calculate that:

V = I x R V = 0.25 A x 20 Ω V = 5 volts

Therefore, our answer is that there will be a **voltage drop of 5 volts** across our 20 ohm resistor.

## Conclusion

In conclusion, understanding voltage drop across components like resistors is crucial for designing and analyzing electrical circuits effectively. In this case, we found out that there will be a **voltage drop of five volts** across our twenty-ohm resistor when there’s five volts across our circuit and total current flow through it was point two-five amperes (0.25A).

I hope this article was helpful for you! If you have any questions or comments about voltage drops or resistors feel free to leave them below.