ELECTRICITY FOR TRADES (LOOSELEAF)
3rd Edition
ISBN: 9781260437454
Author: Petruzella
Publisher: MCG
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Textbook Question
Chapter 3.1, Problem 8RQ
Charging by _______________ involves an already-charged object that is brought close to but does not touch the neutral object.
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1)When a positively charged metal touches an electroscope, electrons transfer from ______.2)Charging by ________________ is when two materials are brought into contact. 3)Charging by ________________ is when two materials are rubbed together. When a material has freely moving valence electrons, it is likely to be ___________________ . 4)As we add more charges in a certain location, electric field strength __________________ . 5)Charging by ______________ happens when an object effect on charges without contact and involves _________________ which means rearrangement of the charges in a neutral object.
18. True or False: Electrons have a positive charge
19. If divide voltage by amperage, your result will be in ______________.
20. The rubber / plastic coating on electrical wire is called ______________.
Valence electrons are _____.
1. the total number of electrons in a charged element.2. the total number of electrons in a inner shell.3. the total number of electrons in a valence shell.4. the total number of electrons in a neutral element.
Chapter 3 Solutions
ELECTRICITY FOR TRADES (LOOSELEAF)
Ch. 3.1 - Define static electricity.Ch. 3.1 - Prob. 2RQCh. 3.1 - Prob. 3RQCh. 3.1 - Prob. 4RQCh. 3.1 - Define electrostatic discharge.Ch. 3.1 - Prob. 6RQCh. 3.1 - Name three ways for a neutral object to become...Ch. 3.1 - Charging by _______________ involves an...Ch. 3.1 - Prob. 9RQCh. 3.1 - Prob. 10RQ
Ch. 3.1 - Prob. 11RQCh. 3.2 - Prob. 1RQCh. 3.2 - What is the external force that causes electron...Ch. 3.2 - Prob. 3RQCh. 3.2 - Prob. 4RQCh. 3.2 - Prob. 5RQCh. 3.2 - Prob. 6RQCh. 3.2 - Compare the operation of grid-tie and off-grid PV...Ch. 3.2 - Prob. 8RQCh. 3.2 - Name the three basic components of a battery.Ch. 3.2 - Prob. 10RQCh. 3.2 - Prob. 11RQCh. 3.2 - How does an electric generator produce...Ch. 3.2 - What type of prime mover is used as part of wind...
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- Name three requirements contained in the specifications regarding material. a. ______________________________________________________________ b. ______________________________________________________________ c. ______________________________________________________________arrow_forward3. An insulator is a material containing _____ valence electrons. Select one: A. THREE OR FOUR B. FIVE OR SIX C. ONE OR TWO D. SEVEN OR EIGHTarrow_forwardMark the correct statement Select one: Oa. Insulators are those materials that contain electrons that can move freely. Or b. Conductors and insulators are materials with similar electrical properties. Or c. Conductors and insulators are those materials containing electrons that can move freely. Or d. Conductors are those materials containing electrons that can move freely. Are the materials that will be used to make electrical circuits.arrow_forward
- A semiconductor is a material that has _____ energy band gap. a)no b)wide c)narrow d)nucleararrow_forwardQuestion from electric circuits.arrow_forwardOhm's Law states that the electric current flowing though a ________ is directly proportional to the ________. Select one: a. closed circuit --- total resistance b. closed circuit --- switch resistance c. open circuit --- supply voltage d. closed circuit --- supply voltagearrow_forward
- 1. A quantity defined as amount of work done over time. _____________ 2. Types of material that has 4 valence electrons. _____________ 3. One Coulomb is equal to ____________ electrons or protons stored in a dielectric. 4. Best conductor material type. _____________ 5. Best insulator material type. _____________ 6. The value of a resistor without considering its tolerance value percentages. _____________ 7. 1 picoampere (pA) is equal to __________ ampere (A).arrow_forwardA cone meter rod 2 cm diameter is drawn until its resistance is 100 times the initialresistance. Its length afterward is _________.arrow_forwardExplain what is meant by voltage.arrow_forward
- Falling valence electrons to lower energy levels emit ______? Heat Light Sound Electricity Magnetismarrow_forward16 Another unit of measurement for electric field is in terms of _____. Select one: a. Farads per Coulomb b. Coulombs per meter c. Amperes per meter d. Volts per meterarrow_forwardWith a second .01-µF capacitor. Remove the jumper from points A and B. Carefully discharge C1 insert the second capacitor (C2)in series with C1 Insert a jumper between points A and B and note the charge time of C1and C2in series.The Charge time was approximately how many seconds? Since the charge time has decreased to ____________________ the value it was withonly C1 in the circuit, it may be concluded that the total capacitance has (increased ordecreased)? the new RC time is (double or half)? the original and the R has not been changed, we concludethat the new total capacitance is how _____µF.arrow_forward
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