Principles Of Electric Circuits
10th Edition
ISBN: 9780134879482
Author: Floyd, Thomas L.
Publisher: Pearson,
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Textbook Question
Chapter 4, Problem 16P
For how many seconds must there be 5 A of current through a 47 Ω resistor in order to consume 25 J?
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Chapter 4 Solutions
Principles Of Electric Circuits
Ch. 4 - If 100 W of power occurs for 30 s, how much...Ch. 4 - Express the following amounts of power in watts...Ch. 4 - Prob. 3RPCh. 4 - How many kilowatt-hours are used by a 1/2 hp motor...Ch. 4 - Determine P in each circuit of Figure 4-2 for the...Ch. 4 - A 100 W light bulb operates on 120 V. How much...Ch. 4 - Prob. 7RPCh. 4 - A 0.25 W, 1.0 k resistor is connected across a 12...Ch. 4 - How will the total power delivered change if the...Ch. 4 - A power supply has an efficiency of 92%. If PIN is...
Ch. 4 - A certain battery delivers 10 A for 6 h. What is...Ch. 4 - The kilowatt-hour is a unit of power.Ch. 4 - One watt is equal to one joule per second.Ch. 4 - 0.050 W is the same as 50 mW.Ch. 4 - Prob. 4TFQCh. 4 - The kilowatt and the horsepower are both units of...Ch. 4 - The power rating of a resistor should always be...Ch. 4 - The amount of heat that a resistor can dissipate...Ch. 4 - If the voltage across a resistor doubles, the...Ch. 4 - Watts law states that power equals voltage times...Ch. 4 - If the current through a resistor doubles, the...Ch. 4 - Within limits, a regulated power supply can...Ch. 4 - The efficiency of a power supply can be expressed...Ch. 4 - A power supply that has a negative output voltage...Ch. 4 - A battery Ah rating is a guide to the amount of...Ch. 4 - When analyzing a circuit problem, you should...Ch. 4 - Power can be defined as 1. energy 2. heat 3. the...Ch. 4 - Two hundred joules of energy are consumed in 10 s....Ch. 4 - If it takes 300 ms to use 10,000 J of energy, the...Ch. 4 - In 50 kW, there are 1. 500 W 2. 5,000 W 3. 0.5 MW...Ch. 4 - In 0.045 W, there are 1. 45 kW 2. 45 mW 3. 4,500 W...Ch. 4 - For 10 V and 50 mA, the power is 1. 500 mW 2. 0.5W...Ch. 4 - When the current through a 10 k resistor is 10 mA,...Ch. 4 - A 2.2 k resistor dissipates 0.5 W. The current is...Ch. 4 - A 330 resistor dissipates 2 W. The voltage is 1....Ch. 4 - If you used 500 W of power for 24 h, you have used...Ch. 4 - How many watt-hours represent 75 W used for 10 h?...Ch. 4 - A 100 resistor must carry a maximum current of 35...Ch. 4 - The power rating of a resistor that is to handle...Ch. 4 - A 22 half-watt resistor and a 220 half-watt...Ch. 4 - When the needle of an analog ohmmeter indicates...Ch. 4 - A 12 V battery is connected to a 600 load. Under...Ch. 4 - A given power supply is capable of providing 8 A...Ch. 4 - A power supply produces a 0.5 W output with an...Ch. 4 - If the current through a fixed resistor goes from...Ch. 4 - If the voltage across a fixed resistor goes from...Ch. 4 - A variable resistor has 5 V across it. If you...Ch. 4 - If the voltage across a resistor increases from 5...Ch. 4 - If the resistance of a load connected to a battery...Ch. 4 - If the amount of time that a battery supplies...Ch. 4 - If the current that a battery supplies to a load...Ch. 4 - If there is no load connected to a battery, its...Ch. 4 - If the output voltage of a power supply increases,...Ch. 4 - For a constant power supply output voltage, if the...Ch. 4 - For a constant power supply output voltage, if the...Ch. 4 - If the load is removed leaving the power supply...Ch. 4 - Prove that the unit for power (the watt) is...Ch. 4 - Show that there are 3.6 106 joules in a...Ch. 4 - What is the power when energy is consumed at the...Ch. 4 - How many watts are used when 7,500 J of energy are...Ch. 4 - How many watts does 1,000 J in 50 ms equal?Ch. 4 - Convert the following to kilowatts: 1. 1,000 W 2....Ch. 4 - Convert the following to megawatts: 1. 1,000,000 w...Ch. 4 - Convert the following to milliwatts: 1. 1 W 2. 0.4...Ch. 4 - Convert the following to microwatts: 1. 2 W 2....Ch. 4 - Convert the following to watts: 1. 1.5 kW 2. 0.5...Ch. 4 - Prob. 11PCh. 4 - If a 300 W bulb is allowed to burn continuously...Ch. 4 - At the end of a 31-day period, your utility bill...Ch. 4 - Convert 5 106 watt-minutes to kWh.Ch. 4 - Convert 6,700 watt-seconds to kWh.Ch. 4 - For how many seconds must there be 5 A of current...Ch. 4 - If a 75 V source is supplying 2 A to a load, what...Ch. 4 - If a resistor has 5.5 V across it and 3 mA through...Ch. 4 - An electric heater works on 120 V and draws 3 A of...Ch. 4 - What is the power when there are 500 mA of current...Ch. 4 - Calculate the power dissipated by a 10 k resistor...Ch. 4 - If there are 60 V across a 680 resistor, what is...Ch. 4 - A 56 resistor is connected across the terminals...Ch. 4 - If a resistor is to carry 2 A of current and...Ch. 4 - A 12 V source is connected across a 10 resistor....Ch. 4 - The maximum voltage is 1 V and the maximum current...Ch. 4 - A 6.8 k resistor has burned out in a circuit. You...Ch. 4 - A certain type of power resistor comes in the...Ch. 4 - For each circuit in Figure 414, assign the proper...Ch. 4 - A 50 load uses 1 W of power. What is the output...Ch. 4 - Assume that an alkaline D-cell battery can...Ch. 4 - What is the total energy in joules that is...Ch. 4 - A battery can provide an average of 1.5 A of...Ch. 4 - How much average current can be drawn from an 80...Ch. 4 - If a battery is rated at 650 mAh, how much average...Ch. 4 - If the input power is 500 mW and the output power...Ch. 4 - To operate at 85% efficiency, how much output...Ch. 4 - Prob. 39P
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- 4. Find the differential equation of the following system whose transfer function is given by S+3 H(s) = s3 +3s+2arrow_forwardPreliminary Laboratory (Prelab) Work Complete the following tasks in the space provided below for the circuit shown in Figure 2. 1. Use voltage division to compute the phasor voltages VR and Vc assuming nominal values of R = 1000[2], C = 0.01[u], and a cosinusoidal time-domain source voltage signal given by equation 5 below. Voltage division must be used to receive any credit. (10 points) equation (5) Vs(t) = VRMSCOS(ct + 0) = 5cos(@t + 0) = 5cos(62832t + 0) = 5cos(62832t) [V] =VRMSCOS(2лft + 0) = 5cos[2л(10000)t + 0] = 5cos[2л(10000)t] [V] 2. Compute the phasor current, Is. (3 points) 3. Calculate the complex power, S, active power, P, and reactive power, Q, for the circuit. (4 points) 4. Construct the phasor diagram for the circuit, and show mathematically that the phasor (vector) sum of the phasor voltages VR and Vc is equal to Vs. (3 points) Agilent 33210A (BECC4242) or Vs Keysight 33500B (BECC4261) Function Generators Is R w + VR Vc + + Zc V out =Vc Figure 2: RC circuit connected…arrow_forwardPlease explain in detail. My answer for the first question is 15/2. I am more confused about how to do the graphing part and figure how long it will take to reach its final value. Thank you, I will like this.arrow_forward
- This is the 3rd time i'm asking this. SOLVE THIS AND FIND V0 , the last answer i was given is -2V which is not even one of the listed options. the listed options are: 12V,4V,24V,6V. first answer given to me was 4V but after i simulated on ltspice albeit i'm not sure if i simulated correct i got a different answer and when i solved it myself i got a different answer. this is my last remaining question. PLEASE SOLVE CORRECTLY AND PROPERLY. NODAL ANALYSIS IS BEST TO USE HERE. IT IS AN IDEAL OP-AMP. SIMULATE USING LTSPICE AND GIVE ME FINAL ANSWER IF POSSIBLE AS THAT IS ALL I CARE ABOUT NOT THE PROCESS. THANK YOU. WILL UPVOTE CORRECT ANSWER, but downvote wrong answer.arrow_forwardFind the exact value of V0. This question was already asked here and the answer was 4V i solved it myself and got a different answer and when i simulated it i also got a different answer.But i might be wrong. so please solve this for me and IF POSSIBLE simulate it so we can be 100% sure that the answer is correct as it's very important that i understand where i went wrong.arrow_forwardFind load flow Solution 1.2 20 Z12 = 0.01+jo.03 in Z₁4=0.02+0.04 и а 9.01+10.03 0.02+0.04 0.01+0.03 58-1 Vek 1.05 100 MVA Pe=230 MW 150 MW w 140 MW 01012 +0.035 80 M√ar 723=0.01+0.03 90 mvare Z34 = 0.012+ 10.035arrow_forward
- SD = 100 MVA 1.12° 150mw ← 0.01+0.03 10.02 -0.04 Too M P = 250 MW 0.02+0.04 0.012 jo.03 $ (V3)=1.05 P.4 -03 = = 200 MW 212=0.01+10.03 Zzze 0.02 +10.04 214=0.02+10.04 Z34 = 0.012+10.03arrow_forwardChoose the correct answer to the following questions: 1- What is the total power radiated in Watts for the power density W = a) 4π² b) 8m²/3 2- Fresnel zone is also called as sine W/m²? 3r² c) 4π²/3 d) 2π²/3 a) Near Field b) Far Field c) Electrostatic Field d) Reactive Field 3- The far-field distance at 900 MHz, if the maximum antenna dimension is 0.75 m is.... a) 3.375 m b) 3.5m c) 3.375 cm d) none 4- The antenna gain is on input power to antenna and on power due to ohmic losses. c) Independent, dependent d) a) Independent, independent b) Dependent, independent Dependent, dependent 5- If beam width of the antenna increases, then directivity. a) Decreases b) Increases c) Remains unchanged d) Depends on type of antennaarrow_forwardplease solve this and clarify each step. thanksarrow_forward
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