13. Two small balls having equal positive charge Q on each are suspended by two insulating strings of equal length L meter, from a hook fixed to a stand. The whole set up is taken in a satellite into space where there is no gravity. Then the angle 0 between two strings and tension in each string is kq 1.0, 12 kq? 2. n, 212 kq2 3. n, 4L * kq? 4. 212