Complete the following statement : When a glass rod is rubbed with silk cloth, the rod become positively charged as

Options

A. Positive charges are transferred from the silk to the rod.
B. negative charges are transferred from the rod to the silk.
C. positive charge are created on the surface of the rod.
D. negative charges are transferred from the silk to the rod.

Answer

To complete the statement: "When a glass rod is rubbed with silk cloth, the rod becomes positively charged as..."

### Step-by-Step Solution:

1. **Understanding the Materials Involved**:
- A glass rod and silk cloth are the two materials being rubbed together.

2. **Identifying the Charge Carriers**:
- In this scenario, the glass rod is made of a material that tends to lose electrons when rubbed against silk, which is a material that tends to gain electrons.

3. **Charge Transfer Process**:
- When the glass rod is rubbed with the silk cloth, electrons (which carry a negative charge) are transferred from the glass rod to the silk cloth.

4. **Resulting Charges**:
- As the glass rod loses electrons, it becomes positively charged because it has more protons (positive charges) than electrons (negative charges).
- Conversely, the silk cloth gains those electrons and becomes negatively charged.

5. **Completing the Statement**:
- Therefore, the completed statement is: "When a glass rod is rubbed with silk cloth, the rod becomes positively charged as negative charge is transferred to the silk cloth."