Three resistors are connected in series across a battery. The value of each resistance and its maximum power rating are as follows: 6.3? and 17.8 W, 28.0? and 12.7 W, and 15.9? and 8.22 W.
(a) What is the greatest voltage that the battery can have without one of the resistors burning up?
(b) How much power does the battery deliver to the circuit in (a)?