A capacitor and a resistor that are in series are initially connected to a power supply with 22 volts. The power supply is then cut-off and the capacitor begins to discharge through the resistor. At t = 20 s, the voltage across the capacitor drops to 7 volts. What is the resistance of the resistor, in mega ohms (MΩ) if the capacitance, C = 7 μF ? Please give your answer in two decimal places.
A capacitor and a resistor that are in series are initially connected to a power supply...
(a) A capacitor of capacitance 220 μF is connected in series with a 150 kΩ resistor, a switch and an ammeter. A d.c. power supply of negligible internal resistance is connected to the circuit as shown below 1 50 kΩ 220HF A stopclock is started and after 10 seconds the switch S is closed Ammeter readings are noted at regular intervals until a time of 80s is shown on the stopclock. The graph below shows how the current in the...
A 1.15 μF capacitor, initially charged to 13.5 V , discharges when it is connected in series with a resistor. Part A What resistance is necessary to cause the capacitor to have only 37% of its initial charge 2.00 s after starting? (MΩ ) Part B What is the voltage across the capacitor at t = 5 τ if the capacitor is instead charged by the same battery through the same resistor? (v)
The discharge curve for a capacitor connected in series with a resistor is shown below, If the capacitance of the capacitor is 22.50 farads, what is the resistance of the resistor? Please calculate the time constant for this circuit. After two time constants what is the potential across capacitor? Please calculate the amount of charge on the capacitor 25.00 minutes after discharge has started, Once capacitor is fully discharged, the charging process begun. How much time, after charging begins, is...
48. If a 5.6pF capacitor, a 49.3pF capacitor and a 35.5pF capacitor are all connected in series, then what is the total capacitance of this series combination in pico Farads? 50. If the Thevenin equivalent for a circuit is a 5V voltage source in series with a 5.3kΩ resistor, then what is the Norton equivalent current for this circuit in milliamps? 51. If the Norton equivalent for a circuit is a 2.2mA current source in parallel with a 23kΩ resistor,...
Circuit Analysis in Electrical Engineering 4. A resistor and a capacitor are connected in series across a 270-V ac supply. When the frequency is 40 Hz, the current flowing in the circuit is 6.25 A. When the frequency is 50 Hz, the current flowing in the circuit is 7.5 A Calculate the resistance and capacitance of the resistor and capacitor respectively. (99.97 μF; 16.798 Ω) If the resistor and capacitor are now connected in parallel across the 60-Hz supply, calculate...
A 5.00 μF capacitor that is initially uncharged is connected in series with a 6.40 kΩ resistor and an emf source with E= 140 V negligible internal resistance. Just after the circuit is completed, what is the voltage drop across the capacitor? Just after the circuit is completed, what is the voltage drop across the resistor? Just after the circuit is completed, what is the charge on the capacitor? Just after the circuit is completed, what is the current through...
A capacitor that is initially uncharged is connected in series with a resistor and a 407.1 Vemf source with negligible internal resistance. Just after the circuit is completed, the current through the resistor is 0.850 mAand the time constant for the circuit is 6.20 s. Part A: What is the resistance of the resistor? Part B: What is the capacitance of the capacitor
A capacitor that is initially uncharged is connected in series with a resistor and an emf of source epsilon = 100 V and negligible internal resistance. Just after the circuit is completed, the current through the resistor is 7.1 x 10^-3 A. the time constant for the circuit is 6.0 s. What is the resistance of the resistor? _____ Ohm What is the capacitance of the capacitor __________ MuF
A capacitor of capacitance C= 2.5 μF is initially uncharged. It is connected in series with a switch of negligible resistance, a resistor of resistance R= 14.5 kΩ, and a battery which provides a potential difference of VB = 160 V.Part (a) Immediately after the switch is closed, what is the voltage drop Vc, in volt across the capacitor?Part (b) Immediately after the switch is closed, what is the voltage drop VR, in volt: across the resistor?Part (c) Immediately after...
An uncharged capacitor and a resistor are connected in series to a source of emf. If emf=9.00 V, capacitance=21.5 ?F, and resistance=127Ω, find (a) the time constant of the circuit. After 1.30 ms, find (b) the charge on the capacitor, (c) the voltage drop across the capacitor, (d) the voltage drop across the resistor, and (e) the current.