Question 13 When a capacitor is connected across a 200 V supply and the charge is...
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 parallel-plate capacitor of capacitance 100 HF is connected to a power supply of 200 V. A dielectric slab of dielectric constant 5 is now inserted into the gap between the plates. (a) Find the extra charge flown through the power supply and the work done by the supply. (b) Find the change in the electrostatic energy of the electric field in the capacitor.
Question 11 (4 points) Saved Capacitor C1 is connected across a battery 15 V. A capacitor 2C1 is connected across a battery of 8 V. Which one has more charge? it depends on other factors both have the same charge C1 C2
Chapter 26, Problem 085 A 35 μF capacitor is connected across a programmed power supply. During the interval from t-o to t-3.00 s the output voltage of the supply is given by V(t)-6.00 + 4.00t-2.002 volts. At t 1.00 s find (a) the charge on the capacitor, (b) the current into the capacitor, and (c) the power output from the power supply. (a) Number 2.8E-4 (b) Number (c) Number Units Units Units
Capacitor C1 is connected across a battery of 5 V. An identical capacitor C2 is connected across a battery of 10 V. A dielectric of dielectric constant / is inserted in the gap of C1. What must / be to have the same charge on both capacitors A) 4 B) 2 C) 1.5
(a) When a 8.50-V battery is connected to the plates of a capacitor, it stores a charge of 29.0 μC. What is the value of the capacitance? (b) If the same capacitor is connected to a 17.5-V battery, what charge is stored?
A 11.4 kΩ resistor and a capacitor are connected in series and
then a 12.0 V potential difference is suddenly applied across them.
The potential difference across the capacitor rises to 4.82 V in
1.48 µs. (a) Calculate the time constant of the
circuit. (b) Find the capacitance of the
capacitor.
A 11.4 k2 resistor and a capacitor are connected in series and then a 12.0 V potential difference is suddenly applied across them. The potential difference across the capacitor...
Constants The charge on a capacitor increases by 17 C when the voltage across it increases from 96 V to 118 V. Part A What is the capacitance of the capacitor? Express your answer using two significant figures and include the appropriate units.
QUESTION 5 A capacitor is fully charged by a battery. When the capacitor is still connected to the battery, the distance between the two plates decreases. Which of the followings will remain the same? Select all that apply. (a) voltage across the capacitor (b) capacitance (c) charge stored in the capacitor (d) electric field between the two plates (e) electric potential energy stored in the capacitor QUESTION 6 A capacitor is fully charged by a battery. When the capacitor is...
QUESTION 6 A capacitor is charged to a potential of 12 V and is then connected to a voltmeter having an internal resistance of 3.7 M. After a time of 4 s the voltmeter reads 2 V. What is the capacitance? (Give your answer in decimal using nF (nano Farad) as unit)
QUESTION 6 A capacitor is charged to a potential of 12 V and is then connected to a voltmeter having an internal resistance of 3.7 M. After a...