How can you charge a metal sphere positively without touching it?

Explanation

To charge a metal sphere positively without touching it, we can use the method of induction. Here’s a step-by-step solution:

### Step 1: Set Up the Metal Sphere
- Place the metal sphere on an insulated stand to prevent any charge from escaping to the ground. This ensures that the sphere can hold any induced charge.

### Step 2: Bring a Negatively Charged Rod Close
- Take a negatively charged rod and bring it close to the metal sphere without touching it. The presence of the negatively charged rod will influence the charges within the metal sphere.

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