# Five positive charges of magnitude q are arranged symmetrically around the circumference of a circle of radius r. What is the magnitude of the electric field at the center of the circle?

**Zero**- \( \mathrm{\frac{kq}{r^{2}}} \)
- \( \mathrm{\frac{5kq}{r^{2}}} \)
- \( \mathrm{\frac{kq}{r^{2}}cos\left[ \frac{2\pi}{5} \right]} \)
- \( \mathrm{\frac{5kq}{r^{2}}cos\left[ \frac{2\pi}{5} \right]} \)

Correct Option: ()