What is the voltage (in V) at Node A, 20 us after the switch has been opened? Answer tolerance is 5%.
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- A)Calculate V1 and v2 for t > 0, if the circuit is in steady stateat t = 0-. B)Calculate i for t > 0, if ig = 10 A and the circuit is in steady statepermanent at t = 0-.As shown, the battery has emf ε = 18.0 V and the other circuit elements have values L = 0.400 H, R1 = 2.00 kΩ, and R2 = 6.00 kΩ. The switch is closed for t < 0, and steady-state conditions are established. The switch is then opened at t = 0. (a) Find the emf across L immediately after t = 0. (b) Which end of the coil, a or b, is at the higher potential? (c) Make graphs of the currents in R1 and in R2 as a function of time, treating the steady-state directions as positive. Show values before and after t = 0. (d) At what moment after t = 0 does the current in R2 have the value 2.00 mA?The element shown in Figure P1.24 has v(t) = 10 V and i(t) = 2 e-t A. Compute the power for the circuit element. Find the energy transferred between t = 0 and t = ∞. Is this energy absorbed by the element or supplied by it?
- COURSE: HIGH VOLTAGE TECHNIQUE In an insulating environment consisting of insulating oil (Ɛr1=12.5) and porcelain (Ɛr2=2.5), the electric field enters the porcelain environment through the oil at an angle of 50 relative to the normal of the border surface. Since the field strength is 87 kV/cm in oil environment, calculate the electric field strength in the porcelain environment, the tangent and normal components of the electric field strength in both environments. PLEASE MAKE A DETAILED SOLUTION!Consider the circuit shown in the figure, with ε=36.0V,R0=50.0Ω,R=150Ω andL=4.00H. (a) Switch S1 is closed. Just after S1 is closed, what are the current i0 through R0 andthe potential differences VAC and VCB? (b) After S1 has been closed a long time so that the current has reached its final, steadyvalue, what are i0 , VAC and VCB? (c) Find the expressions for i0 , VAC and VCB as functions of time since S1 was closed.Do your results agree with what you get in (a) and (b) ? Graph i0 , VAC and VCB as afunction of time.Consider the circuit shown in the figure, with ε=36.0V, R0=50.0Ω, R=150Ω and L=4.00H. (a) Switch S1 is closed. Just after S1 is closed, what are the current i0 through R0 andthe potential differences VAC and VCB? (b) After S1 has been closed a long time so that the current has reached its final, steady value, what are i0 , VAC and VCB? (c) Find the expressions for i0, VAC and VCB as functions of time since S1 was closed. Do your results agree with what you get in (a) and (b)? Graph i0, VAC and VCB as afunction of time.
- a. Determine the current i1Ohm(t) for t > 0 (assume steady state at t = 0-). b. Plot i1Ohm(t) vs. t and explain its behavior using short concise sentences.In the figure attached, let E=60 V, R1=2 ohms, R2= 3 ohms, L1= 1 H, L2= 1 H. Determine the currents in the circuit at time t >= 0 if the initial currents are equal to zero.a) What is the coupling constant between the two coils?b) Using the dot notation, determine if the induced voltages are additive or subtractive?c) Write the expressions for V1(t) and V2(t).d) Using KVL, determine the differential equation needed to solve for I2(t).e) Solve the differential equation in part d to get I2(t). Assume no energy stored in inductors at t=0.f) Use I1(t) and I2(t) to determine V1(t) and V2(t).
- Write the differential equation for t > 0 for iC in the given figure. Assume VS = 9 V, RS = 4 kohm, R1 = 11 kohm, and R2 = R3 = 20 kohm.The switch is now opened an instant after time a long time t =T. e) Find the current in the 100ohm resistor immediately after the switch is opened. f) Find the magnitude and sign (+ or -) of the voltage Va at point a with respect to ground (that is, with respect to the negative side of the battery) immediately after the switch is opened. g) Sketch as accurately as you can (but without solving analytically) the voltage V from t>0 to t> TIn the circuit shown in the figure, after the switch is kept in position a for a long time, it is brought to the b position at t = 0. Since I1 = 12 Amp, R = 10000ohm, C = 0.025Farad, L = 20 Henry, find the expressions given below. I(s)=? i(t)=?