Draw the circuit diagram for wheatstone bridge to determine unknown resistance. Write condition for balancing of the bridge.

Explanation

### Step-by-Step Solution

#### Step 1: Draw the Circuit Diagram for Wheatstone Bridge
To draw the circuit diagram for a Wheatstone Bridge, we need to represent the four resistors and the battery. The setup consists of two pairs of resistors arranged in a diamond shape.

- **Components**:
- Four resistors: \( P \), \( Q \), \( R \), and \( S \).
- A galvanometer (G) connected between the midpoints of the two pairs of resistors.
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