Resistors are important parts of electrical circuits. They help control the flow of electricity. Let's break down how they work:

1. Controlling Current: Resistors limit how much current moves through the circuit. This is really important because if too much current flows, it can break things like light bulbs or batteries.

2. Ohm's Law: You might have heard of Ohm's Law, which says $V = IR$. In simple terms:

   • $V$ stands for voltage,
   • $I$ stands for current,
   • $R$ stands for resistance. So, if you increase the resistance, the current will get lower if the voltage stays the same.

3. Dividing Voltage: Resistors also help split the voltage across different parts of the circuit. This way, each part gets the right amount of power it needs.

In summary, think of resistors like speed bumps for electricity. They keep everything moving safely and smoothly!