Units of conductance are

Options

A. ohm
B. mho
C. slemen
D. `ohm^(-1)`

Answer

### Step-by-Step Solution

1. **Understanding Conductance**: Conductance is a measure of how easily electricity flows through a material. It is the reciprocal of resistance.

2. **Units of Conductance**: The units of conductance are:
- **MHO**: This is the most common unit of conductance and is derived from Ohm, which is the unit of resistance.
- **Siemens (S)**: This is the standard unit of conductance in the International System of Units (SI). 1 MHO is equivalent to 1 Siemens.
- **Parohm**: This is another term used for MHO, indicating the reciprocal relationship with Ohm.
- **Simon**: This is an older term that is sometimes used interchangeably with MHO.

3. **Reciprocal Relationship**: Since conductance (G) is the reciprocal of resistance (R), we can express this relationship mathematically:
\[ G = \frac{1}{R} \]
This means that if resistance is high, conductance is low, and vice versa.

4. **Conclusion**: Therefore, the units of conductance can be summarized as:
- MHO
- Siemens (S)
- Parohm
- Simon

5. **Correct Options**: Based on the above understanding, we can conclude that the correct units of conductance are MHO, Siemens, and Parohm, while Simon is also acceptable in some contexts.

### Final Answer
The units of conductance are MHO, Siemens, Parohm, and Simon.

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