Q1: Two resistors R1, R2 are both at a temperature T. Determine the required relationship between R1 and R2 if the rms thermal noise voltage across the series combination is twice that across the parallel combination. Ans: R1 = R2. %3D

Second graph The V vs t graph shown below is for the resistor of an RC circuit. V (V) 10 7.5 5. 2.5 1.5 3. 4.5 6. 7.5 t(s) Determine the time constant of the RC circuit. T= If C = 3 F, determine R. R= Ω In this case, was the capacitor charging or discharging? impossible to determine impossible to determine

Q2/ for the series circuit in the Figure beside a. Find the total resistance.. b. Calculate the source current Is. c. Determine the voltages V1, V2, and V3. d. Calculate the power dissipated by R1, R2, and R3. e. Determine the power delivered by the source, and compare it to the sum of the power levels of part (d). 20 V R₁=20 R₂ = 50 W +

Consider the RC circuit in the figure below. The switch was at position a for a long period of time and is switched to position b at time t = 0. For the following, check each box that corresponds to a true statement. Select "None of the above" if none of them are true.A. The current through the resistor and the current 'through' the capacitor are always the same.B. If the switch has been at b for a while, and we then move it to a, the charge on the capacitor as a function of time will look like an exponential decay.C. Immediately after the switch is moved to b, the voltage across the resistor is zero.D. Immediately after the switch is moved to b, the voltage across the capacitor is not zero.E. While the switch is at a (having been at a for a while), the current 'through' the capacitor is zero.F. If the switch has been at a for a while and we then switch it to b, the current through the resistor as a function of time will look like an exponential decay.G. None of the above.