Physics

AC Circuits

You have a series RL Circuit hooked up to a battery ('charging'). This means that the inductor is able to store energy it gains from the battery over time. The inductor has a value of L = 31.000 H while the resistor has a value of R = 34.00 a Ohms. The battery they are hooked up to has a value of EMF = 5.00 V. You can assume that at t = Os there is no current in the system and the inductor has no energy stored across it. At time t = 1.750 time constants, what is the voltage across the resistor?

QUESTION 13 The figure shows a phasor diagram for a serios RLC circuit at an instant in time. In this circult, the current will... Vc . be in phase with the power supply voltage bilag behind the voltage across tho power supply lead the voltage across the power supply d lead the voltage across the resistor

= = Additional Problems(73) A series RLC circuit contains the following components: R=15012, L= 0.250 H, C = 2.00uF and a source with AVmar = 210 V operating at 50.0 Hz.Our goal is to find the phase angle, the power factor, and the power input for this circuit. (a) Find the inductive reactance in the circuit. (b) Find the capacitive reactance in the circuit. (c) Find the impedance in the circuit. (d) Calculate the maximum current in the circuit. (e) Determine the phase angle between the current and source voltage. (f) Find the power factor for the circuit. (g) Find the power input to the circuit.

A 45 W light bulb operates with an effective ac voltage of 110 V. (a) What is the effective current through the light bulb? (b) From Ohm's law, what is the resistance of the light bulb? Part Answer Units (a) Hint A (b) Hint 22

You have an RC Circuit - a Resistor and Capacitor (in series) hooked up to an ideal battery. The capacitor is initially uncharged. Voltage vs. Time Capacitor Voltage (V) 0.632 8 0 1T 2T 3T 4T 5T Time (s) C - 129.00 microfarads (feF) Battery - 9.50 V At a time of 3.50 seconds after you start charging the capacitor, the capacitor has a voltage that is 71.0% of the maximum possible voltage. What is the value of the resistor? Put your answer in kilo Ohms (k2). You do not need to write units in your answer.

The capacitor of capacitance C can be charged (with the help of a resistance R) by a voltage source V, by closing switch S1 while keeping switch S2 open. The capacitor can be connected in series with an inductor 'L' by closing switch S2 and opening S. Initially, the capacitor was uncharged. Now, switch Si is closed and S2 is kept L open. time constant of this circuit is r, then__. R S In H S2 mm 00000 L

QUESTION 12 A 15.0 uF capacitor in series with a 130 k2 resistor is charged using a 12.0 V battery (emf is also voltage difference) as shown below. The switch is closed at t=0s. How much time will it take for the capacitor to collect 50 uC of charge? (15 points) R emt

You have an RC Circuit - a Resistor and Capacitor (in series) hooked up to each other. The capacitor is initially charged to a voltage of V. You allow the capacitor to discharge through the resistor, using up its energy. Voltage vs. Time Capacitor Vo Voltage (V) 0.368 VO 17 27 37 47 57 Time (s) C = 101.00 microfarads (UF) Initial Voltage = 10.50 V At a time of 15.00 seconds after you start discharging the capacitor, the capacitor has a voltage that is 71.0 % of the initial voltage across the capacitor. What is the value of the resistor? Put your answer in kllo Ohms (k_2).

A 1.00mH inductor and one 1.00uF capacitor are connected in series. The current in the circuit is described by I = 20t where t is in seconds and I is in amperes. Initially, the capacitor has no charge. Determine a. The voltage across the inductor as a function of time, b.The voltage across the capacitor as a function of time C.The time when the energy stored in the capacitor first exceeds that in the inductor.

A Zener diode is connected to a battery and a load as shown. The currents I, Iz and IL are respectively 4 k2 A IL 1 60 V Iz 10 V=Vz R = 2 kA B A 12.5mA, 5mA, 7.5mA B 15mA, 7.5m A, 7.5mA C 15mA, 7.5mA, 5mA D 12.5mA, 7.5mA, 5mA

A 115-11F capacitor whose initial charge is 3.91 x 10-2 coulomb is placed in series with a 2000- resistor and a switch, as shown. When the switch is closed, the capacitor begins to discharge. (a) What is the time constant for the circuit in seconds? (b) What is the current through the circuit when 1 = 2.ORC and when I = 4.ORC? 115 F 2000

Match the following characteristic solutions of circuits with their corresponding characteristic parameter: T=RC w=1/1(C) ✓ Choose] Qcos(wt-o) Qe^(-t/t) le^(-t/t) Icos(wt-o) Qe^(-t/t)cos(wt+o) (Choose w=2nf TEL/R [Choose ] >

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