Two charges of 9 and 16 μC are placed 0.7 m apart. Find the position of the null point (A point where the net field is zero) on the line joining the two charges.

Explanation

To find the position of the null point between two charges of 9 μC and 16 μC that are 0.7 m apart, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Charges and Distance**:
- Let \( Q_1 = 9 \, \mu C = 9 \times 10^{-6} \, C \)
- Let \( Q_2 = 16 \, \mu C = 16 \times 10^{-6} \, C \)
- Distance between the charges \( R = 0.7 \, m \)
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