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One end of a 10 cm long silk thread is fixed to a large vertical surface of a charged nonconducting plate and the other end is fastened to a small ball having a massof 10 g and a charge of 40 x 10-6C. In equilibrium, the thread makes an angle of 60degre with the vertical. Find thesurface charge density on the plate. |
| Answer» One end of a 10 cm long silk thread is fixed to a large vertical surface of a charged nonconducting plate and the other end is fastened to a small ball having a massof 10 g and a charge of 40 x 10-6C. In equilibrium, the thread makes an angle of 60degre with the vertical. Find thesurface charge density on the plate. | |