The reciprocal of resistance is called

Options

A. major resistance
B. conductance
C. specific resistance
D. none of these

Explanation

To solve the question, "The reciprocal of resistance is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Resistance**:
- Resistance is a measure of the opposition to the flow of electric current in a conductor. It is denoted by the symbol \( R \).

2. **Reciprocal of Resistance**:
- The reciprocal of a quantity is defined as \( \frac{1}{\text{quantity}} \). Therefore, the reciprocal of resistance \( R \) is given by \( \frac{1}{R} \).

3. **Defining Conductance**:
- The reciprocal of resistance is known as conductance. It is denoted by the symbol \( G \).

4. **Units of Resistance and Conductance**:
- The unit of resistance is ohm (Ω).
- Since conductance is the reciprocal of resistance, its unit will be the reciprocal of ohm. Thus, the unit of conductance is ohm inverse (Ω⁻¹) or siemens (S).

5. **Conclusion**:
- Therefore, the reciprocal of resistance is called conductance.

### Final Answer:
The reciprocal of resistance is called **conductance**.