Different materials can make it tricky to use Ohm's Law, which is important for designing circuits.

Ohm's Law says that:

Voltage (V) = Current (I) x Resistance (R)

Here’s what each term means:

• Voltage (V) is like the push that moves electricity through a circuit.
• Current (I) is the flow of electricity.
• Resistance (R) is what slows down the flow of electricity.

But different materials react in special ways, making things more complicated.

1. Conductors: These materials usually follow Ohm's Law. But when they get too hot, their resistance can increase. This can cause problems known as "thermal runaway," where the temperature keeps rising.

2. Insulators: These materials don’t let electricity flow well. Even a small voltage can cause big issues, so it's hard to predict how they will behave.

3. Semiconductors: Their resistance changes based on light, temperature, and other impurities. This makes it difficult to calculate because their behavior isn’t straightforward.

To tackle these problems, engineers use advanced materials science and special software to simulate circuits.

This way, they can understand how different materials act in real life and make better predictions.

Knowing these differences is really important for designing effective circuits.