An uncharged insulator can be charged by ______________ with another suitable body.

Options

A. diverging
B. rubbing
C. induction
D. excess

Answer

To solve the question, we need to identify the correct method by which an uncharged insulator can be charged using another suitable body.

### Step-by-Step Solution:

1. **Understanding Insulators**:
- Insulators are materials that do not allow the flow of electric charge. They can be charged, but the method of charging is different from conductors.

2. **Methods of Charging**:
- There are several methods to charge objects, including conduction, induction, and friction (rubbing).

3. **Analyzing the Options**:
- **Diverging**: This term does not relate to charging an insulator.
- **Induction**: This method involves bringing a charged object near an insulator without direct contact, which does not charge the insulator permanently.
- **Rubbing**: This method involves physically rubbing an insulator with another material, which transfers electrons and charges the insulator.
- **Excess**: This term does not apply to the process of charging.

4. **Conclusion**:
- The correct method to charge an uncharged insulator is by **rubbing** it with another suitable body.

Thus, the complete answer to the question is: "An uncharged insulator can be charged by **rubbing** with another suitable body."