Principles Of Electric Circuits
10th Edition
ISBN: 9780134879482
Author: Floyd, Thomas L.
Publisher: Pearson,
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Textbook Question
Chapter 2, Problem 12PQ
How does and electronic power supply differ from the other sources of voltage?
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Chapter 2 Solutions
Principles Of Electric Circuits
Ch. 2 - How many coulombs do 93.8 1016 electrons...Ch. 2 - How much energy is required to move 50 C from one...Ch. 2 - If there are 2.0 A of current through the filament...Ch. 2 - A certain resistor has a yellow first band, a...Ch. 2 - A certain resistor has a yellow first band, a...Ch. 2 - What is the resistance indicated by 1K25?Ch. 2 - What is the cross-sectional area of a 0.0015 in....Ch. 2 - Use Table 2-3 to determine the resistance of 100...Ch. 2 - Related Problem In Figure 257 the switch is moved...Ch. 2 - The number of protons in the nucleus is the atomic...
Ch. 2 - The outermost shell of an atom contains the...Ch. 2 - Silicon and germanium are classed as insulators.Ch. 2 - The unit of charge is ampere.Ch. 2 - Like charges repel.Ch. 2 - Coulombs law shows the relationship of the energy...Ch. 2 - A battery stores charge.Ch. 2 - An ideal voltage source can provide a constant...Ch. 2 - A volt can be defined in terms of energy per...Ch. 2 - A fuel cell combines a fuel with an oxidizer to...Ch. 2 - The unit of current is coulomb.Ch. 2 - In a 5-band precision resistor, the fourth band is...Ch. 2 - A resistor with a single black band represents...Ch. 2 - A resistor labeled 0R1 is 1 ohm.Ch. 2 - A rheostat performs the same function as a...Ch. 2 - A strain gauge changes resistance in response to...Ch. 2 - Prob. 17TFQCh. 2 - A circular mil is a unit of area.Ch. 2 - The three basic measurements that can be done by a...Ch. 2 - If a GFCI breaker detects a difference in the hot...Ch. 2 - A neutral atom with an atomic number of three has...Ch. 2 - Electron orbits are called 1. shells 2. nuclei 3....Ch. 2 - Materials in which there is no current when...Ch. 2 - When placed close together, a positively charged...Ch. 2 - The charge on a single electron is 1. 6.25 1018 C...Ch. 2 - Potential difference is another term for 1. energy...Ch. 2 - The unit of energy is the 1. watt 2. coulomb 3....Ch. 2 - Which one of the following is not a type of energy...Ch. 2 - Which one of the following is not a possible...Ch. 2 - Electrical current is defined as 1. the reciprocal...Ch. 2 - There is no current in a circuit when 1. a switch...Ch. 2 - The primary purpose of a resistor is to 1....Ch. 2 - Wire resistance depends on the 1. type of material...Ch. 2 - Potentiometers and rheostats are types of 1....Ch. 2 - The current in a given circuit is not to exceed 22...Ch. 2 - The neutral line in a ac utility should 1. have...Ch. 2 - What is the charge in coulombs of the nucleus of a...Ch. 2 - What is the charge in coulombs of the nucleus of a...Ch. 2 - How many coulombs of charge do 50 1031 electrons...Ch. 2 - How many electrons does it take to make 80 C...Ch. 2 - Determine the voltage in each of the following...Ch. 2 - Five hundred joules of energy are used to move 100...Ch. 2 - What is the voltage of a battery that uses 24 J of...Ch. 2 - How much energy does a 12 V battery use to move...Ch. 2 - If a resistor with a current of 20 mA through it...Ch. 2 - List four common sources of voltage.Ch. 2 - Upon what principle is electrical generators...Ch. 2 - How does and electronic power supply differ from...Ch. 2 - A certain current source provides 100 mA to a 1 k...Ch. 2 - Determine the current in each of the following...Ch. 2 - Six-tenths coulomb passes a point in 3 s. What is...Ch. 2 - How long does it take 10 C to flow past a point if...Ch. 2 - How many coulombs pass a point in 0.1 s when the...Ch. 2 - 5.74 1017 electrons flow through a wire in 250...Ch. 2 - Find the conductance for each of the following...Ch. 2 - Find the resistance corresponding to the following...Ch. 2 - Determine the resistance values and tolerance for...Ch. 2 - Find the minimum and the maximum resistance within...Ch. 2 - Determine the color bands for each of the...Ch. 2 - Determine the resistance and tolerance of each of...Ch. 2 - Determine the resistance and percent tolerance for...Ch. 2 - From the selection of resistors in Figure 267,...Ch. 2 - Determine the color bands for each of the...Ch. 2 - Determine the resistance and tolerance of each of...Ch. 2 - Determine the color bands for each of the...Ch. 2 - The adjustable contact of a linear potentiometer...Ch. 2 - What resistance is indicated by 4K7?Ch. 2 - Determine the resistance and tolerance of each...Ch. 2 - Trace the current path in Figure 268(a) with the...Ch. 2 - With the switch in either position, redraw the...Ch. 2 - There is only one circuit in Figure 268 in which...Ch. 2 - In Figure 268, determine which (if any) circuits...Ch. 2 - In Figure 268, determine which (if any) circuits...Ch. 2 - Through which resistor in Figure 269 is there...Ch. 2 - Devise a switch arrangement whereby two voltage...Ch. 2 - Show how a single switch can be used to connect a...Ch. 2 - Show the placement of an ammeter and a voltmeter...Ch. 2 - Prob. 42PQCh. 2 - In Figure 271, how much voltage does each meter...Ch. 2 - In Figure 271, indicate how to connect an ammeter...Ch. 2 - In Figure 269, show the proper placement of...Ch. 2 - Show the proper placement of voltmeters to measure...Ch. 2 - What is the voltage reading of the meter in Figure...Ch. 2 - How much resistance is the ohmmeter in Figure...Ch. 2 - Determine the resistance indicated by each of the...Ch. 2 - What is the maximum resolution of a 4-digit DMM?Ch. 2 - Indicate how you would connect the multimeter in...
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- In Fig.35 resistive loads, 1, 2, and 3, respectively, absorb 1200 W, 2400 W, and 3600 W. Calculate the current: a. In lines A and B. b. In the neutral conductors. c. In the HV line.arrow_forward+ -ww I 2 12V 2 Determine I, I,, I₂ and V₁ 1 _< + www 5 12 16 6 5 wwwarrow_forwardDetermine (a) the average and (b) rms values of the periodiccurrent waveform shown in Fig. P8.9arrow_forward
- Repairs have to be carried out on HV cir- cuit breaker No. 6 shown in Fig. 26. If the three 220 kV lines must be kept in service, which disconnecting switches must be kept open?arrow_forwardFind the voltage v(t) for t>=0 show all steps and redraw circuit as necessary, the switch closes at t=0 and v(t) is the voltage over the 4ohm resistor as shown in the circuit.arrow_forwardFind the voltage v(t) for t>=0 please redraw circuit as necessary and show all steps.arrow_forward
- Determine (a) the average and (b) rms values of the periodiccurrent waveform shown in Fig. P8.9arrow_forwardFind Eigenvalues and Eigenvectors for the following matrices: [5 -6 1 A = 1 1 0 3 0 1arrow_forwardUse Gauss-Jordan Elimination method to solve the following system: 4x1+5x2 + x3 = 2 x1-2x2-3x3 = 7 3x1 x2 2x3 = 1. -arrow_forward
- 3. As the audio frequency of Fig. 11-7 goes down, what components of Fig. 12-4 must be modified for normal operation? OD C₂ 100 HF R₁ 300 Re 300 ww 100A R 8 Voc Rz 10k reset output 3 R7 8 Voc 3 reset output Z discharge VR₁ 5k 2 trigger 2 trigger 7 discharge R 3 1k 5 control voltage threshold 6 5 control voltage 6 threshold GND Rs 2k C. C. 100 GND Uz LM555 1 Ce 0.01 U, LM555 0.01 8.01.4 PRO Fig. 11-7 Audio lutput Pulse width modulator R4 1k ww C7 Re 1k ww R7 100 VR 50k 10μ Ra R10 C₁. R1 3.9k 3.9k 0.14 100k TO w Rs 51 82 3 H 10 Carrier U₁ Ca Input A741 2.2 Us MC1496 PWM signal input R2 0.1100k Uz A741 41 Cs 1 Re 10k VR2 50k VR3 100k 14 12 C3. 3% + Ce 0.1 10μ 5 1A HH C +12V 0.1 O PWM Output C 0.02- R 100k +12 V Demodulated output 6 Ca 0.33 w R 10k R12 100k ww 31 о + 4A741 -12 V Fig. 12-4 PWM demodulator C 1500parrow_forwardDUC 1. In Fig. 12-4, what are the functions of the VR1 and VR2? 2. In Fig. 12-4, what is the function of the VR3? VR₁ 50k C₁ R1 0.1 100k Carrier Input U₁ A741 PWM signal input R41k www Re 1k w C7 ± 10μT R7 100 ww =L H C4 2.2 H W82 Rs 51 3 10 U3 MC1496 C2 R2 U2 A741 22 0.1 100k VR2 50k VR3 100kr 14 C3 10μ 1k 0.1 4 5 6 12 m Re 10k R9 R102 3.9k 3.9k HHI C10 0.1 -0 +12V C11 R 0.02 100k +12 V Demodulated output C R11 R12 A741 0.33 10k 100k -12 V Ca 1μ C12 1500p PRODUC Fig. 12-4 PWM demodulator PRODUCTSarrow_forward10.37 Use mesh analysis to find currents I₁, I2, and I3 in the circuit of Fig. 10.82. ML 120-90° V 120 -30° V Figure 10.82 For Prob. 10.37. N N Z=80-135arrow_forward
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