[" A cell of emf "12" V and internal resistance "],[6Omega" is connected in parallel with another cell "],[" of emf "6" V and internal resistance "3Omega," such "],[" that the positive of the first cell joins the "],[" positive of the second cell and similarly the "],[" negative of the second cell and similarly the "],[" the second cell.A bulb of filament resistance "],[14Omega" is connected across the combination."],[" The power delivered to be bulb is "],[[" 1) "4.0W," 27"3.5W," 3) "8.5W," 4) "2.5W]]