Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Chapter 4, Problem 42P
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Chapter 4 Solutions
Introductory Circuit Analysis (13th Edition)
Ch. 4 - What is the voltage across a 220 resistor if the...Ch. 4 - What is the current through a 2.20 resistor if the...Ch. 4 - How much resistance is required to limit the...Ch. 4 - At starting, what is the current drain on a 12 V...Ch. 4 - If the current through a 100k resistor is 3.6A...Ch. 4 - If a voltmeter has an internal resistance of 50k...Ch. 4 - If a refrigerator draws 2.2 A at 120 V, what is...Ch. 4 - If a clock has an internal resistance of 8k find...Ch. 4 - A washing machine is rated at 4.2 A at 120 V. What...Ch. 4 - A CD player draws 80 mA when 4.5 V is applied....
Ch. 4 - The input current to a transistor is 20A If the...Ch. 4 - Prob. 12PCh. 4 - If an electric heater draws 9.5 A when connected...Ch. 4 - In a TV camera, a current of 5.6 mA passes through...Ch. 4 - Plot the curve of I (vertical axis) versus...Ch. 4 - Plot the I-V curve for a 5 and a 20 resistor on...Ch. 4 - Prob. 17PCh. 4 - Sketch the internal resistance characteristics of...Ch. 4 - Plot the I-V characteristics of a 1k,10k, and a 1M...Ch. 4 - If 540 J of energy are absorbed by a resistor in...Ch. 4 - The power to a device is 40 joules per second...Ch. 4 - How many joules of energy does a 8 W nightlight...Ch. 4 - How long must a steady current of 1.4 A exist in a...Ch. 4 - What is the power delivered by a 12 V battery if...Ch. 4 - The current through a 4k resistor is 7.2 mA. What...Ch. 4 - The power consumed by a 2.2k resistor is 240 mW....Ch. 4 - What is the maximum permissible current in a 82,...Ch. 4 - The voltage drop across a transistor network is 22...Ch. 4 - If the power applied to a system is 10 kW, what is...Ch. 4 - A 1 W resistor has a resistance of 4.7M . What is...Ch. 4 - A 2.2k resistor in a stereo system dissipates 42...Ch. 4 - What are the hot resistance level and current...Ch. 4 - What are the internal resistance and voltage...Ch. 4 - A calculator with an internal 3 V battery draws...Ch. 4 - A 20k resistor has a rating of 100 W. What are the...Ch. 4 - What is the total horsepower rating of a series of...Ch. 4 - A 10 resistor is connected across a 12 V battery....Ch. 4 - How much energy in kilowatthours is required to...Ch. 4 - How long can a 1500 W heater be on before using...Ch. 4 - A 60 W bulb is on for 10 h. a. What is the energy...Ch. 4 - In 10 h an electrical system converts 1200 kWh of...Ch. 4 - At 12/kWh how long can you play a 250 W color...Ch. 4 - The electric bill for a family for a month is...Ch. 4 - How long can you use an Xbox 360 for $1 if it uses...Ch. 4 - The average plasma screen TV draws 339 W of power,...Ch. 4 - The average PC draws 78 W. What is the cost of...Ch. 4 - If a house is supplied with 120 V, 100 A service,...Ch. 4 - What is the total cost of using the following at...Ch. 4 - What is the total cost of using the following at...Ch. 4 - Prob. 50PCh. 4 - The motor of a power saw is rated 72% efficient....Ch. 4 - What is the efficiency of a dryer motor that...Ch. 4 - A stereo system draws 1.8 A at 120 V. The audio...Ch. 4 - Prob. 54PCh. 4 - Prob. 55PCh. 4 - An electric motor used in an elevator system has...Ch. 4 - The motor used on a conveyor belt is 85%...Ch. 4 - Prob. 58PCh. 4 - The overall efficiency of two systems in cascade...Ch. 4 - What is the total efficiency of three systems in...Ch. 4 - If the total input and output power of two systems...Ch. 4 - Using PSpice 0r Multisim, repeat the analysis of...Ch. 4 - Using PSpice or Multisim, repeat the analysis of...
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- An instrument consumes 750 Whr and is used for 20 days at 8 hours per day. How much would the instrument cost for 20 days if electricity costs $10.90 kW-hr?arrow_forwardCalculate the cost (in cents) of using a 862 watt appliance for 30 days if used 4 hours per day, and if electricity costs 10 cents per kilowatt-hour.arrow_forwardQ1/A-What is the total cost of using the following at 4c per kilowatthour? a) 600 W air conditioner for 8 h b) 2800 W clothes dryer for 45 min c) 850 W coffee maker for 35 minarrow_forward
- A 220V light bulb takes 0.45A current and operates 12H in a day. At the rate of Php 4.50 per kWh, determine the cost to operate the bulb for 30 days.arrow_forward1000W electric heater with 85% of efficiency is replaced by a 1000W electric heater with 95% efficiency. if heater is operated in a 8-hour shift for 5 days a week, what is the annual kwh savings?arrow_forwardCalculate the electricity bill amount for a month of February, if 2 bulbs of 40 W for 4 h, 5 tube lights Of 60 W for 6 h, a TV of 100 W for 2 h, a washing machine of 250 W for 2 h, a water pump of 0.5 HP for 10 minutes are used per day. The cost per unit is $ 3.50. Consider 1 HP= 746 watts.arrow_forward
- 24. Approximately how many horsepower is an electrical device listed as 3,000 watts? Select one: A. 1/4 B. 1/6 C. 6 D. 4arrow_forwardHow much energy does a 3-hp motor deliver in 10 minutes? Assume that 1 horsepower = 746 W.arrow_forwardThe power to a device is 40 joules per second (J/s). How long will it take to deliver 640J?arrow_forward
- The Power dissipated by a device is 40 Watts. How long will it take to deliver 640 Joules?arrow_forwardIf a household have a budget of 20 cents to light their house on Easter Day and they have a 100 W bulb, then how long will they be able to turn on the light if the energy company charges 1 kWh of electricity for 8 cents.arrow_forwardAn electronic device has a resistance of 30 Ohms and a current of 20 A. What is the voltage across the device in kiloVolts?arrow_forward
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