## What are Resistors?

Resistors are essential components in electronic circuits that control the flow of electrical**current**. They are passive two-terminal devices that oppose the flow of current, causing a voltage drop across their terminals. The primary function of a resistor is to limit the amount of current flowing through a specific part of a

**circuit**, thereby protecting other components from damage due to excessive current.

## Resistance and Ohm's Law

The key property of a resistor is its**resistance**, which is measured in ohms (Ω). Resistance determines how much a resistor opposes the flow of current. The relationship between

**voltage**, current, and resistance is governed by

**Ohm's law**, which states that the current through a resistor is directly proportional to the voltage across its terminals and inversely proportional to its resistance. Mathematically, Ohm's law is expressed as: V = I × R where V is the voltage in volts (V), I is the current in amperes (A), and R is the resistance in ohms (Ω).