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In Figure at the right the ideal batteries have emfs ℰ1 = 6.00 V and ℰ2 = 10.0 V, the resistances are each 3.0 Ω, and the potential is defined to be zero at the grounded point of the circuit. What are potentials (a) V1 and (b) V2 at the indicated points?

2 陳 ΔΔΔΔΔΔΔ Δ Δ ΔΔ ΔΔΔΔΔ ΔΔΔ Δ Δ Δ Δ Δ Δ Δ ΔΔΔΔ Consider the circuit diagram below. D 9.0 V Fuse wing if you have the following fuses available, which fuse Dis the smallest sized fused that could allow ▷ this circuit to still operate? Show your and circle your answer. work A) I amp fuse b) 2 amp fuse с 5.0 Ω d) 8.052 4 amp fuse 8 amp fuse A K

The capacitor in the circuit shown is fully charged by a 24 V battery. The switch is closed at t = 0. At sometime after the switch is closed, the voltage across the capacitor is measured to be 10 V. What is the current in the circuit at this time, in Ampere? C = 3.0 µF, and R = 2.0 02. Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. Cil

(a) Using the circuit schematic shown, find a set of 3 equations that will allow you to solve for the 3 currents indicated in the figure. V1=15Volts, V2=22Volts, R1=1650, R2=2750, R3=2250, and R4=1500. (b) What is the current I3? www www R3 R1 R23 2 RA V2 13

Problem 3: Show how to calculate the noise figure (NF2) for a particular circuit fed from a source with internal resistance Rs2 knowing its noise figure (NF1) when it is fed from a source with internal resistance Rs1. In your solution sketch the system as usual.

Given the parallel circuit presented below IT A I2 R2 R3 12v R1 в The total power that the Power Source of 12V provides is 120 Watts. It is known that the current 13 = 3Amp and the Resistor R2=40. Calculate the value of the resistor R1.

An initially uncharged parallel plate capacitor is connected to a circult containing a battery with emf 20V and a resistor, R 8.8M as shown in the figure to below. The capacitor whose plates have an area of A = 5.9mm² are separated by a distance of d = 4.6mm and one third of the capacitor is filled with a dielectric material, ₁3 and the rest (two thirds) is filled with another dielectric material, ₂-2.1. At t=0 the switch is closed. 7.8 seconds after the switch is closed the electric field within the first dielectric material (x) is observed to be 12 x 10 N/C. Find the charge on the capacitor at this instant (t=7.8s) in terms of permitivity of free space en? Express your answer using zero decimal place. R Answer:

Write down the Kirchhoff Junction equation and solve it for I, in terms of I, and I3. Write the result here: I1 Write down the Kirchhoff Loop equation for a loop that starts at the lower left corner and follows the perimeter of the circuit diagram clockwise. 0 = Write down the Kirchhoff Loop equation for a loop that starts at the lower left corner and touches the components 4V, R2, and R3. 0 = The resistors in the circuit have the following values: R1 = 13 N R2 = 6 N R3 = 2 N Solve for all the following (some answers may be negative): I1 Amperes I, = Amperes I3 = Amperes NOTE: For the equations, put in resistances and currents SYMBOLICALLY using variables like R1,R2,R3 and I,I2,I3. Use numerical values of 10 and 4 for the voltages.