A pitch ball covered with a tin foil having a mass m kg hangs by a fine silk thread of length r metres in an electric field E. When the ball is given an electric charge of q coulomb, it stands out d metre apart from the vertical line. The magnitude of an electric field will be
A pitch ball covered with a tin foil having a mass m kg hangs by a fine silk thread of length r metres in an electric field E. When the ball is given an electric charge of q coulomb, it stands out d metre apart from the vertical line. The magnitude of an electric field will be
frason , 8 Years ago
Grade 12
