When a glass rod is rubbed with silk cloth, the glass rod is found to acquire `9 xx 10^(-15)` C. Calculate the amount of charge in the silk cloth.

Explanation

To solve the problem of finding the charge on the silk cloth when a glass rod acquires a charge of \(9 \times 10^{-15}\) C after being rubbed with the silk, we can follow these steps:

### Step 1: Understand Charge Conservation
When the glass rod is rubbed with the silk cloth, electrons are transferred from the glass rod to the silk cloth. This results in the glass rod acquiring a positive charge, while the silk cloth acquires an equal amount of negative charge.

### Step 2: Identify the Charge on the Glass Rod
The charge acquired by the glass rod is given as:
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