Two identical point charges, each of mass m and charge q, are suspended in a uniform horizontal electric field E by two insulating strings of equal length. At equilibrium, each string makes an angle θ with the vertical. If the angle θ is small, the electric field strength E can be expressed as:
1
\( E = \frac{mg}{q} \cot(\theta) \)
2
\( E = \frac{q g}{m} \sin(\theta) \)
3
\( E = \frac{mg}{q} \sin(\theta) \)
4
\( E = \frac{mg}{q} \tan(\theta) \)