Basic Engineering Circuit Analysis
11th Edition
ISBN: 9781118992661
Author: Irwin, J. David, NELMS, R. M., 1939-
Publisher: Wiley,
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Chapter 6, Problem 5P
The voltage across a
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Basic Engineering Circuit Analysis
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- Consider an inductor that is connected to a voltage source that has the waveform given in (a), and the current, power, and the energy of the inductor has the waveforms given in (b), (e), and (d), respectively. According to these waveforms, estimate the inductance of the inductor. 5 Voltage (mV) Current (mA) 0.7 1.0- 0.6- 0.8- 0.5- 0.6- 0.4- 0.4- 0.3- 02- 0.2- 0.5 1 0.1- 1.5 3.5 Time (s) 2 2.5 3 -02 0.5 1 1.5 2 2.5 3 3.5 Time (s) (a) (b) Energy (nJ) Power (W) 40- 024 35 0.15- 30- 25- 0.1- 20- 0.05- 15- 0- 10- 0.5 1.5 2.5 Time (s) -0.05- 5- -0.14 0.5 1.5 2.5 Time (s) (c) (d) 200 mH 400 mH 2 mH 8 H 18 mH 36 mH 0.6 mH O 0.06 H O Oarrow_forwardConsider an inductor that is connected to a voltage source that has the waveform given in (a), and the current, power, and the energy of the inductor has the waveforms given in (b), (c), and (d), respectively. According to these waveforms, estimate the inductance of the inductorarrow_forwardQ6. Explain why an a.c capacitor that is working in an a.c circuit will get hot, whereas a d.c capacitor working in a d.c circuit of the same voltage will not get hot.arrow_forward
- A 140-mH inductor and a 5.50- resistor are connected with a switch to a 6.00-V battery as shown in the figure below. E ww 000 R L (a) After the switch is first thrown to a (connecting the battery), what time interval elapses before the current reaches 220 mA? (???) s (b) What is the current in the inductor 10.0 s after the switch is closed? (???) A (c) Now the switch is quickly thrown from a to b. What time interval elapses before the current in the inductor falls to 160 mA? (???) msarrow_forwardThe capacitor is discharged through a resistor with the resistance R = 10000 Ohm with a relaxation time of 10 ms. What is the capacitance of the capacitor? What is the charge of the capacitor after time 25 ms after the beginning of discharging if the initial charge was 20 nC?arrow_forwardAt a potential of 7000 V, a simple parallel-plate capacitor will be built to store charge. The capacitor has a separation distance of 0.21 mm between plates and a plate area of 0.030m2.The dielectric constant of a material with a dielectric constant of 6.5 is positioned.in the space between the plates Compute the capacitance of the capacitor and compute the magnitude of the charge stored on each plate.Then,If the capacitance in above has to be increased, choose one acceptable dielectric material from Table 2 below to use between the plates.Justify your mathematical decision.arrow_forward
- a) Equivalent capacitance Ceq of the combination shown in figure. b) The charge net charge stored by Ceq. c) Stored charge of capacitor C2 and C6arrow_forwardExercise: A square-wave voltage with amplitude 2 V and frequency 500 Hz is applied across an ideal inductor. The inductance is 500 mH. Based on the mathematics discussed above, we can say that the current will be a triangle-wave. What is the amplitude of the triangle-wave current?arrow_forwardCompute for the theoretical voltages across the resistor and inductor for 10kHz and 60kHz. Show the step-by-step computation. Express the voltages in polar form.arrow_forward
- A 10-9.F capacitor (1 nanofarad) is charged to 50 V and then disconnected. One can model the charge leakage of the capacitor with a RC circuit with no voltage source and the resistance of the air between the capacitor plates. On a cold dry day, the resistance of the air gap is 3× 1018 2, on a humid day, the resistance is 6 × 10° 2. How long will it take the capacitor voltage to dissipate to half its original value on each day? ... On the dry day, it will take seconds.arrow_forwardIf the current through 10mH inductor increases from zero to 2 A, how much energy is stored in the inductor Select one: a. 10m) b. 20 m) c. 5m) d. 40 m)arrow_forwardA capacitor of 50 μF is connected to 100 V d.c. is charged on So find the energy stored in the capacitor. Now if a 100 μF capacitor is connected in parallel with it, find the voltage and stored energy and energy loss of both the capacitors.arrow_forward
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