Resistors of high value are made up of carbon. Why ?

Explanation

### Step-by-Step Solution:

1. **Understanding the Composition of High-Value Resistors**:
Resistors of high value are often made from carbon. This is primarily due to the unique properties of carbon that make it suitable for this application.

2. **Electrical Insulation**:
Carbon acts as an electrical insulator. This means it does not allow electric current to flow through it easily. This property is crucial for resistors, as they are designed to resist the flow of current.

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