How to solve this using kirchhoff's law?☹
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How to solve this using kirchhoff's law?☹
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- A battery of emf 30.0 V is connected to a switch, an inductor of inductance ? = 0.600 ? and two resistors, R1 = 10.0 ? and R2 = 6.00?. The switch is initially open. A. What are the values of currents ?1, ?2, ?3 just after the switch is closed? (Just give an answer) ?1 = ?2 = ?3 = B.)Which point, a or b, is at higher potential or are they at the same potential, just after switch S is closed? (Just give an answer) C. What is the value of current ?1 through the battery a long time after the switch is closed? Show your work and briefly explain your logicTwo pure elements, R = 30 ohms and C = 400 microfarad, in a parallel connection have an applied voltage of the form v = 200 cos (2000t - 30degree) volts. Find the value of the total current at time t = 52 milliseconds.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?
- Bioelectrical impedance analysis is a commercially available method used to estimate body fat percentage. The device applies a small potential between two parts of the patient's body and measures the current that flows through. With an estimate of the resistance individually of the muscle and fat between the two points, the composition of the tissue can be estimated. Assume that the muscle and fat tissue can be modeled as resistors in parallel. a) If a potential difference of 5 V is applied across the patient's arm, what is the potential drop across the patient's fat? b) If the measured resistance of the patient's arm is 750 Ω and the resistance of fat is 3 times that of muscle, what is the resistance of the muscle?A resistance of 10 ohms and an inductance of 0.02 H are connected in series to a 150-V dc source. The current is zero initially at t = 0. (a) Obtain the equation of the current at any time t; (b) At what time the current be 10A?; (c) What is the current after 2 secs?Vbatt=25 VC1=90 ?CC2=75 ?CC3=60 ?CR1=160 ΩR2=120 Ωt2=21.6 msect3=27 msecConsider the circuit shown below which shows a battery connected to some resistors and capacitors along with some switches which will be toggled opened or closed at different times. The components are listed above. The capacitances are in microFarads (?F), the resitances are in Ohms (Ω), and the times are in milliseconds (msec). A stopwatch is started at time t1=0 ms. At that time, switch S1 is closed and all other switches are open and the capacitor is allowed to charge up.(a). (i)What is the charge (in uC) on C1 at the time the stopwatch reads t2=21.6 ms?a)3690 b)1520 c)5710 d)2630 e)683 f)1750 (a).(ii)What is the current (in mA) through R1 at t2=21.6 ms?34.9 30.4 114 13.6 73.6 52.4 (b)(i)What is the voltage (in V) across R1 at t2=21.6 ms?8.37 5.58 2.18 11.8 18.2 4.85(ii). What is the voltage (in V) across C1 at t2=21.6 ms?63.2 29.1 40.9 7.57 19.4 16.9(c). (i) What is the energy (in mJ) in C1 at t2=21.6 ms?6.63…
- A solid specimen of dielectric dielectric constant of 4.0, shown in the figure has an internal void of thickness 1mm. The specimen is 1cm thick and is subjected to a voltage of 80 kV(rms). If the void is filled with air and if the breakdown strength of air can be taken as 30 kV(peak)/cm, find the voltage at which an internal dischargea. Determine the current i1Ohm(t) for t > 0 (assume steady state at t = 0-). b. Plot i1 Ohm(t) vs. t and explain its behavior using short concise sentences.Please answer the following points in detail and rigorously. Instead ofresort to formulas, develop from basic principles (laws ofvoltages and currents, definition of electrical power, properties ofphasors, among others) a) Suppose that between the two terminals of an element there is a voltage v (t) and that through the terminal marked with a positive sign a current i (t). Show that if v (t) and i (t) are sinusoidal and are out of phase an angle θ, then the active power P which is consumed by this element is proportional to cosθ. b) How much is P for a pure inductor and how much for a capacitor pure? Does this make physical sense? c) When the power factor seen between two terminals is specified, Why is it necessary to indicate whether it is late or early? d) Show that the complex power consumed by two elements in parallel is the sum of the individual complex powers. After, repeat the procedure but for two elements in series. e) What meaning would you give to the P consumed by an…
- Considering that the power loss of a resistor is RI^2 and the information in the manual’s background section, derive an expression for the energy lost through Joule heating in a resistor when a capacitor completely discharges.Equation: Vt= Vm sin 120π t Solve Vrms and VaverageThe figure shows an electrical circuit with an ideal source ε1 = 12 [V], a real source ε2 = 9 [V] and r1 = 1 [Ω], eight resistors and two capacitors. Switches A and B areThey are originally open and the charge on the capacitors is zero. If switch A closes (B remains open), determine:a) The currents of the resistors R2 and R5.b) The potential difference between b and c, that is, Vbc. Indicate which point is at the greatest potential.c) The power supplied by the real source ε2.