1. a) Find the total resistance of the circuit in the figure. b) What is the voltage across the 4-2 resistor? c) What is the current in R3? d) Determine the energy used by Re in 1.5min. e) What is the power dissipated in R2? (30pts) R260 WW R1 30 60 WW R4 40 WW 20 WW R; 20 1Bv 2. A wire of unknown composition has a resistance of Ro = 350 when immersed in water at 20"C. When the wire is placed in boiling water, its resistance rises to 47.609. What is the temperature on a hot sunny day when the wire has a resistance of 37.80$2? (15pts)