A 20 Ohm lamp and a 5 Ohm lamp are connected in series and placed across a potential difference of 50 V. What is the equivalent (total) resistance of the circuit? What is the voltage drop acrosseach lamp?

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature