A 5Ω resistance is in a series circuit with a 0.20 H pure inductance and a 40.0nF pure capacitance. The combination is placed across a 30 V, 1780 Hz power supply. Find i. The current in the circuit; (4 marks) ii. The phase angle between source voltage and current; (1 mark) iii. The power loss in the circuit; (1 mark) iv. And the voltmeter reading across each element of the circuit.

1in2 processor chip can be modelled as an isothermal plane wall of silicon, isothermal on both sides. the power input to the bottom of the plane wall, or the processing power of the chip, often called the thermal design power (tdp), is 100w. assume the periphery is adiabatic. the silicon is 400 microns thick. the temperature at the junction, or in this case on the bottom of the isothermal plane wall, is 85°c. what is the top surface temperature, assuming that the only mode of heat transfer is conduction