THE LENGTH OF UNIFORM ROD IS 100.0CM AND RADIUS IS 1.00CM.IF LENGTH IS MEASURED WITH METER ROD HAVING LEAST COUNT 1MM AND RADIUS IS MEASURED WITH VERNIER CALIPERS HAVING LEAST COUNT 0.1MM,THE PERCENTAGE ERROR IN CALCULATED VOLUME OF CYLINDER IS?
at each of the four corners of a sqare of side A, a charge +q is placed freely. what charge should be placed at the centre of the sqare so that whole system be in equilibrium