RC Circuit Report

Explain the relation between area, distance and capacitance  RC Circuits

The following figure represents an RC-Circuit with the switch. In Figure A, the capacitor is initially uncharged. In Figure B, the capacitor is initially fully charged. 1) Draw and label the current direction immediately after the switch is closed for each figure. 2) Consider Figure A. What is the voltage across the capacitor as t → 0? Explain. 3) Consider Figure B. Is the voltage across the resistor increasing, decreasing or staying the same as t → 0? Explain. A) B) R C

A Bipolar capacitor is plugged into an outlet in our house and removed. Can the voltage of this capacitor be measured by DC voltmeter or AC voltmeter ? What can be the voltage value read in the voltmeter?

An AC voltage source is connected to a circuit. The current in the circuit leads the voltage by 90°. The circuit comprises of a: Select one: A. Pure inductor B. Inductor with resistor C. Pure capacitor D. Capacitor with resistor

Describe the behavior of the voltage across the resistor with time as thecapacitor charges. Explain the reason for this behavior.

A capacitor is rated for 250 Vac. Can it be used in a DC circuit? If yes, what is the maximum DC voltage that the capacitor can be connected to?

In the diagram below, the switch S has been closed for a long time. A) What is the output voltage Vout? What is the charge on the capacitor? b) The switch is opened, so the output voltage increases. What is the time constant that describes the charging of the capacitor in terms of R and C? c) When Vout reaches 10 V, the switch closes and the capacitor begins to discharge. What is the time constant that describes the discharging in terms of R and C? Hint: Apply Kirchhoff's Rules to both loops and the sum of the currents at the junction above the capacitor in the diagram, and use I=dq/dt. If the switch opens when Vout reaches a lower value, say 5V, the capacitor will charge again, and thus one can cycle the voltage with a time constant determined by the circuit: this demonstrates the principle of operation of an electronic timer. 4R S 15 V Vout R

A capacitor in series with a 20-KO resistance across a 10 V ac source. What size C is needed for equal voltage across R and Xc at frequency of 100 Hz and 100 KHz.

1. is the decrease of voltage gain with frequency 2. the capacitance which effectively appears from input to output as the signal is applied is known as

You are modifying the design of an existing inductor and want the inductance to be 1/2 of it's current value.  You could achieve this by which of the following options. Select all that apply.   Question 1 options:   Decreasing the number of windings by a factor of 2.   Decreasing the length of the inductor by a factor of 2.   Increasing the area of the inductor by a factor of 2.   Increasing the number of windings by a factor of 2.   None of the other responses are correct.

A resistor and a capacitor are connected in series with a variable inductor. When the circuit is connected to a 240 – V, 50 – Hz supply, the maximum current given by varying the inductance is 0.5 A. At this current, the voltage across the capacitor is 250 V. Calculate the values of (a) the resistance, (b) the capacitance, and (c) the inductance. draw circuit diagram

A capacitor can be used .............................................. in electrical circuits. Which of the followings fit?   To regulate the currents To regulate the voltages To store energy by deposition of electric charges To provide energy as passive circuit element To store energy in the form of magnetic field To create time varying voltages and currents To dissipate energy To convert elektrik energy into heat or light

The current through a 5-mH inductor is shown in the Figure. Determine the sign and magnitude of the voltage across the inductor at t = 5 ms. Enter your answer in magnitude of volts with the current sign.

please legably.

.A series RLC circuit contains a 4-kN resistor, an inductor with an inductive reactance (X,) of 3.5 kn, and a capacitor with a capacitive reactance (Xc) of 2.4 kN. A 120-Vac, 60-Hz power source is connected to the circuit. How much voltage is dropped across the inductor?

12

Please do the last question. Stated construct a graph of time versus current and voltage across the inductor. The graph is computerized. Will get a like.

An alternating voltage is applied to a series circuit consisting of a resistor and iron-cored inductor and a capacitor. The current in the circuit is 0.5 A and the voltages measured are 30 V across the resistor, 48 V across the inductor, 60 V across the resistor and inductor and 90 V across the capacitor. Find (a) the combined copper and iron losses in the inductor (b) the applied voltage.

An RC circuit is connected to a 120-V, 60-Hz power source. The resistor is 25 ohms and has a voltage drop of 65 volts. What is the capacitance of the capacitor?

A 10-µF (C1) and a 15-µF (C2) capacitor are connected in series to a 230-V, 60-Hz source. Determine the value of the voltage drop across each capacitor.

6. An inductive circuit of 50-2 resistance and 0.08-H inductance is connected in series with a capacitor across a 200-V, 50-Hz supply. The current taken is 3.8 A leading. Find the value of the capacitor.

The arrangement of several capacitors is shown in the figure below with each capacitance value, namely C1 = C5 = C6 = 6 µF and C2 = C3 =C4=4 µF. Then the capacitor arrangement is connected to a battery with a value of V = 12 V. Determine the total charge stored in all the capacitors and what is the charge on the capacitor C5