ELECTRICITY FOR TRADES (LOOSELEAF)
3rd Edition
ISBN: 9781260437454
Author: Petruzella
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 7.2, Problem 9RQ
The current through and the voltage drop across a precision resistor are measured and found to be 8 mA and 1.5 V, respectively. What is the resistance value of the resistor?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Four cells each of 2.10 volt internal emf are parallel connected together to make a battery. The internal resistances are 0.004, 0.005, 0.003 and 0.0025 ohm. Calculate for parallel connections: (a) internal emf and resistance of the single equivalent cell (b) current for a terminal voltage of 1.95 volts, (c)current in each cell
59. A DC voltmeter has a sensitivity of 1000 2/voll
When it measures half full scale in 100 V range,
the current through the voltmeter will be?
(a) 1 mA
(c) 0.5 mA
(b) 50 mA
(d) 100 mA
During the measurement of a low resistance
using a potentiometer, the following readings
were obtained:
Voltage drop across unknown resistance = 0.531
%3D
Volts.
Voltage drop across a 0.1 Ohm standard
resistance connected in series with the
unknown resistance = 1.083 Volt.
%3D
Value of the unknown resistor is
(a) 49.03 milliohm
(b) 108.3 milliohm
(c) 20.4 milliohm
(d) 53.1 milliohm
Chapter 7 Solutions
ELECTRICITY FOR TRADES (LOOSELEAF)
Ch. 7.1 - What is the base unit and symbol used for...Ch. 7.1 - Write the metric prefix and symbol used to...Ch. 7.1 - Convert each of the following: a. 2,500 to...Ch. 7.2 - State Ohms law.Ch. 7.2 - List the three formulas associated with Ohms law.Ch. 7.2 - Calculate the unknown value for each circuit (a)...Ch. 7.2 - A pilot lamp with 12 volts applied to it draws a...Ch. 7.2 - A resistor has a resistance of 220 . The current...Ch. 7.2 - An electric soldering iron with a 40- heating...Ch. 7.2 - A baseboard heater draws a current of 8 A when...
Ch. 7.2 - A sensor module has an internal resistance of...Ch. 7.2 - The current through and the voltage drop across a...Ch. 7.2 - The heating element for an electric floor heating...Ch. 7.2 - How much power is lost in the form of heat when 25...Ch. 7.2 - The voltage drop across a 330- resistor is...Ch. 7.2 - A digital multimeter display indicates a reading...Ch. 7.2 - Calculate the unknown value for each circuit (a)...Ch. 7.2 - Assume that applying 120 volts to a resistive load...Ch. 7.2 - The voltage drop across a 10-W, 330- resistor is...Ch. 7.2 - The cold resistance of a tungsten lamp filament is...Ch. 7.2 - An electric baseboard heater is rated for 1200 W...Ch. 7.2 - A lamp dimmer switch is rated for 5 A at 120 V....Ch. 7.2 - A 400-W 4- public address speaker is to be fused...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- A 50 μA basic D'Arsonval movement with an internal resistance of 500 is to be used as a voltmeter. The value of the multiplier resistance required to measure a full-scale voltage range of 0-5 volts is?arrow_forwardIf the measured values for resistors #1, #2 and # 3 are 552, 549 and 549 Ohms calculate the %error (measured difference from expected value as a percentage) for each resistor. Are they within tolerance (or specification) of manufacturer? #1 98.4% #2 97.9% #3 97.9% Yes within specification a. b. #1 1.6% #2 2.1% #3 2.1% Yes within specification #1 1.6% #2 2.1% #3 2.1% No outside specification Ос. Use Ohm's Law to calculate the equivalent resistance of R12, R23 and R123 (as specified in the lab manual) using measured resistances #1 552 Ohms, #2 549 Ohms, #3 549 Ohms R, R2 R,= R12 R23arrow_forwardWhat are the differences between load resistance in a circuit and internal resistance in a battery? Explain.arrow_forward
- A l mA meter movement with an internal resistance of 100 ohms is to be converted into a 0 - 100 micro Ampere. Calculate the value of shunt resistance required.arrow_forwardWhat is the effect of decrease in voltage at constant resistance on a current according to ohms lawarrow_forwardA 12.1-mA current flows through a 10 percent, 2.7-k2 resistor. What range must the resistor voltage be in?arrow_forward
- Confused on how to measure each resistors current using tinkercad...can someone help me with this?arrow_forwardA resistor has a resistance of 20 ohms at 30 degrees Celsius and 32 ohms at 90 degrees Celsius. Find its resistance at 125 degrees Celsius. Determine also the temperature coefficient at 100 degrees Celsius. (Please Show Complete solution and write properly) (Round off the final answer to the 4th decimal if possible and box the final answer)arrow_forwardGiven: R1 = 9.4 N %3D R2= 8.6 N R3= 7.6N R4= 9.7 N R5= 7.3 N R6= 3.1 N When a 2.6 - volt battery is connected across point A and B. Find the individual current and Voltages across each resistorsarrow_forward
- What is a resistor? What is an internal resistance? What is a dry cell?arrow_forwardexplain ohms law in terms of resistancearrow_forwardThe convention for voltmeters is to use a black wire for the negative reference terminal and a red wire for the positive reference terminal. Explain why two wires are required to measure a voltage. If the wires into the voltmeter are swapped by accident, what will happen during the next measurement?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSON
Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning
Programmable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Fundamentals of Electric CircuitsElectrical EngineeringISBN:9780078028229Author:Charles K Alexander, Matthew SadikuPublisher:McGraw-Hill Education
Electric Circuits. (11th Edition)Electrical EngineeringISBN:9780134746968Author:James W. Nilsson, Susan RiedelPublisher:PEARSON
Engineering ElectromagneticsElectrical EngineeringISBN:9780078028151Author:Hayt, William H. (william Hart), Jr, BUCK, John A.Publisher:Mcgraw-hill Education,
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:9780078028229
Author:Charles K Alexander, Matthew Sadiku
Publisher:McGraw-Hill Education
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:9780134746968
Author:James W. Nilsson, Susan Riedel
Publisher:PEARSON
Engineering Electromagnetics
Electrical Engineering
ISBN:9780078028151
Author:Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:Mcgraw-hill Education,
What is an electric furnace and how does it work?; Author: Fire & Ice Heating and Air Conditioning Inc;https://www.youtube.com/watch?v=wjAWecPGi0M;License: Standard Youtube License