Which of the following is an ohmic resistance ?

Options

A. LED
B. junction diode
C. filament of a bulb
D. nichrome wire.

Explanation

To determine which of the given options is an ohmic resistance, we need to understand the concept of ohmic resistance and Ohm's law.

### Step-by-Step Solution:

1. **Understand Ohm's Law**:
- Ohm's law states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points. This relationship can be expressed as:
\[ V = I \times R \]
- Here, R is the resistance, which remains constant for ohmic materials.

2. **Identify Ohmic Resistance**:
- An ohmic resistance is a material that follows Ohm's law, meaning its resistance remains constant regardless of the voltage and current applied. Common examples include metals like copper and nichrome.

3. **Evaluate the Options**:
- Without the specific options provided, we can still conclude that materials like nichrome wire are typically considered ohmic resistances because they maintain a linear relationship between voltage and current.

4. **Conclusion**:
- Based on the understanding of ohmic resistance and the evaluation of common materials, nichrome wire is identified as an ohmic resistance.

### Final Answer:
- The correct answer is **Nichrome wire**.