Problem 3: Show how to calculate the noise figure (NF2) for a particular circuit fed from a source with internal resistance R$2 knowing its noise figure (NF1) when it is fed from a source with internal resistance Rs1. In your solution sketch the system as usual.
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- Problem2:. Consider the circuits shown below. (a) Write the equation for current using the junction rule. (b) Write two equations using loop rule (c) Use these equations to find I₁, I2, and I3? (b) What is the power dissipated across each resistor (1²R)? V₁ = 24 V 12 R₂ = 62 R₁ = 80 ½ 13 R₂=402 + ₂10 VA Direct Current Circuit (DC-Circuit) is composed of two R = 100 2 resistors, which bare placed in series with a single D-Cell flashlight battery, with voltage V = 1.5 V. Assume that the battery is fully charged. Draw the circuit diagram that you would use to analyze this problem;Consider the circuit shown in figure, For R1=6000, R2-9000, V1-6 V and 11-0.39 A, using Kirchhoff's laws and Ohm's law find the following: R1 Il o R2 VI VO (voltage difference on R2)= Power on 1= Power on R1= Power on R2= Power on V1%D
- The Q vs t graph shown below is for the capacitor of an RC circuit. Q (C) 10 7.5 5. 2.5 7 14 21 28 35 42 49 56 63 70 t(s) Determine the time constant of the RC circuit. TH If R= 802, determine C. C= MY NOTESA. The following subparts are about an RC dynamic circuit 1. Please draw a circuit diagram for a 15 V battery that is in series with a 5-ohm resistor, has an open switch, and a .75 uF capacotir. Then find the circuit's time constant in us. 2. Find the initial curent when the swith is closed at t=0s and use the initial current plue the time constant to create a mathematical expression for the current as a function of time, I(t). Please include a drawing of I(t) from t=0 to t=5 RC 3. Use the expression you created in 2 to find the current at t=.010ms 4. Find the charge Q on the capacitor plates when they are fully charged. Write another mathematical expression for the capactitor charge as a function of time using the charge Q plus the time constant. Include a drawing of Q(t) from t=0 to t=5RC. 5. Use the expression you created in 4 to find voltage across the capacitor plates at t=.010ms. The subparts 2 and 3 please!Q7.1 The circuit shown below is an RC circuit that consists of R1 = 100 kn, R2 = 200 kn, R3 = 300 kn, C = 5.00 μF, and E = 9.00 V. When the switch is closed at t = 0, the capacitor starts from an uncharged state. The following inquiries relate to the performance of the circuit. a. What is the RC circuit's time constant? b. When will the capacitor be 80% charged? c. At that point, what is the current passing through the R3 resistor? E S R₁ R3 R₂ www