ELECTRICITY FOR TRADES (LOOSELEAF)
3rd Edition
ISBN: 9781260437454
Author: Petruzella
Publisher: MCG
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Textbook Question
Chapter 7.1, Problem 1RQ
What is the base unit and symbol used for electric:
- a. Current
- b. Voltage
- c. Resistance
- d. Power
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The unit of current is:
Select one:
O a. volt
O b. coulomb
O c. ampere
O d. joule
What are the basic parts of a battery? How do batteries generate electrical current?
1. The practical unit of electric charge.
2. A path for the current to flow.
3. DC Voltage has
4. Resistance to current flow in AC circuits, measured in ohms.
5-7. Types of grounds in electrical circuits.
8. Also known as Ohm's Law Original Formula
9. A quantity defined as amount of work done over time.
10. Types of material that has 4 valence electrons.
11. One Coulomb is equal to
12. Best conductor material type.
13. Best insulator material type.
14.The value of a resistor without considering its tolerance value percentages.
polarity
electrons or protons stored in a dielectric.
15. 1 picoampere (pA) is equal to
ampere (A).
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...
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