A uniform electric field of `3xx10^4` N/C is applied iin a horizontal direction . A pendulum bob of mass 90 mg and carrying a charge of `1.5xx10^(-8)` C is suspended through a string of length 1m. Calculate tension developed in the string and the angle made by the string with the vertical .

Explanation

To solve the problem, we need to determine the tension in the string and the angle made by the string with the vertical when a pendulum bob carrying a charge is subjected to a uniform electric field.

### Given Data:
- Electric field, \( E = 3 \times 10^4 \, \text{N/C} \)
- Mass of the bob, \( m = 90 \, \text{mg} = 90 \times 10^{-3} \, \text{g} = 90 \times 10^{-6} \, \text{kg} \)
- Charge on the bob, \( q = 1.5 \times 10^{-8} \, \text{C} \)
- Length of the string, \( L = 1 \, \text{m} \)
- Acceleration due to gravity, \( g = 9.8 \, \text{m/s}^2 \)
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