A 9.0V battery is connected across a 2.2kilo ohms and 6.8kilo ohms resistors connected in series. calculate the potential differences across the 2.2 kilo ohm registor.

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?