In intrinsic semiconductor at room temperature the no. of electrons and holes are

Options

A. equal
B. zero
C. unequal
D. infinite

Answer

To solve the question regarding the number of electrons and holes in an intrinsic semiconductor at room temperature, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Intrinsic Semiconductors**:
- An intrinsic semiconductor is a pure semiconductor material without any significant dopant atoms present. Common examples include silicon (Si) and germanium (Ge).

2. **Behavior at Room Temperature**:
- At room temperature, intrinsic semiconductors have a certain number of charge carriers, which are electrons and holes.

3. **Charge Carrier Concentration**:
- In intrinsic semiconductors, the number of free electrons (n) is equal to the number of holes (p). This is a fundamental property of intrinsic semiconductors.
- Mathematically, we can express this as:
\[ n = p \]
- Here, \( n \) represents the number of electrons, and \( p \) represents the number of holes.

4. **Conclusion**:
- Since the number of electrons is equal to the number of holes in an intrinsic semiconductor, we conclude that at room temperature, the number of electrons and holes are equal.

5. **Select the Correct Option**:
- Based on this understanding, the correct answer to the question is that the number of electrons and holes in an intrinsic semiconductor at room temperature is equal.

### Final Answer:
The number of electrons and holes in an intrinsic semiconductor at room temperature is equal.

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