Question

1.
A point charge 0.2 C is placed on the
circumference of a non-conducting ring of
radius 1 m, which is rotating with constant
angular acceleration of 2 rad/s2. If ring starts
motion at t = 0, then magnetic field at the
centre of the ring at t = 10 s, is
(1) 3 x 10-7 tesla
(2) 10-7 tesla
(3) 4 x 10-7 tesla
(4) 2 x 10-7 tesla​

Answer 1

Answer:

4)2×10-7 tesla..............