A ring of radius r has charge density +2 0on one half and -7 on the other half. its dipole moment is (b) 27.r (d) r (a) 47r (c) 3ar dintribution shown in the ti

A ring of radius R has charge density +2 0on one half and -7 on the other half. Its dipole moment is (b) 27.R (d) R (a) 47R (c) 3AR dintribution shown in the tigg