Section 20.3 Electric Circuits ... the circuit and current returning to ground are equal. 19. The transfer of excess charge through a conductor to Earth is called. 20
Section 20.1 Electric Charge and Static Electricity ... This section explains how electric charge is created and ... What is the law of conservation of
Chapter 20 Chapter 20 - Electricity Electricity Section 20.2 ... •• According to Ohm’s Law, ... Electric Current & Circuits 20.2 & 20.3
Section 20.2 Electric Current (pages 604–607) This section discusses electric current, resistance, and voltage. Reading
Section 20.2 Electric Current and Ohm’s Law (pages 604–607) This section discusses electric current, ... electric field 16
Section 20.2 Electric Current and Ohm’s Law (pages 604–607) This section discusses electric current, resistance, and voltage. It also uses
Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved. Section 20.1 Electric Charge and Static Electricity. (pages 600–603). This section explains how electric charge is created and how positive and negative charges affect
Section 20.2 Electric Current and Ohm’s Law (pages 604–607) This section discusses electric current, resistance, and voltage. It also uses
All rights reserved. Section 20.2 Electric Current and Ohm's Law. (pages 604– 607). This section discusses electric current, resistance, and voltage. It also uses. Ohm's Law to explain how voltage, current, and resistance are related. Reading Strateg
Physics. 94 and the quotient q. I t. = (3.1) is defined to be the current across the area in the forward direction. (If it turn out to be a negative number, it implies a ..... (i) thermal speeds of copper atoms at ordinary temperatures, (ii) speed of
Figure 20.1 Electric energy in massive quantities is transmitted from this hydroelectric facility, the Srisailam power station located along the Krishna River in India, by the ... on static electricity and the fundamental force underlying its behavio
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Electric Charges and Fields 3 neutralise or nullify each other’s effect. Therefore the charges were named as positive and negative by the American scientist
Chapter 19 Electric Charges, Forces, and Fields Outline 19-1 Electric Charge 19-2 Insulators and Conductors 19-3 Coulomb’s Law (and net vector force)
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20.2 Electric Current and Ohm’s Law Reading Strategy Predicting Copy the table below and write a prediction of what electric current is. After you
Contact the seller or manufacturer, state the problem, and suggest a fair solution. • Keep an accurate record of your efforts to get the problem solved. Include ..... 553. Chapter 20. Saving for the Future. Main Idea Saving part of your income is the
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Chapter 20 Outline – Colonial Encounters I. ... The period 1750–1900 saw a second, distinct phase of European colonial conquest. 1. focused on Asia and Africa
There are two types of electrical circuit, parallel circuits and series ... In an electrical circuit, the presence of a resistor limits the current and prevents damage related to short circuits. The unit used to measure resistance is the ohm ( symbol
PHYSICS. MODULE - 5. Electricity and. Magnetism it. From experimental observations, he showed that the electrical force between two static point charges q. 1 and q. 2 ...... 17.7 : a) The graph between I and 1/l for wires of uniform cross-section and
Name ___________________________ Chapter 20
Class ___________________
Date _____________
Electricity
Section 20.2 Electric Current and Ohm’s Law (pages 604–607) This section discusses electric current, resistance, and voltage. It also uses Ohm’s Law to explain how voltage, current, and resistance are related.
Reading Strategy
(page 604)
Predicting Before you read, write a prediction of what electric current is in the table below. After you read, if your prediction was incorrect or incomplete, write what electric current actually is. For more information on this Reading Strategy, see the Reading and Study Skills in the Skills and Reference Handbook at the end of your textbook. Electric Current Electric Current Probably Means
1. What is electric current? 2. Complete the following table about electric current. Electric Current Type of Current
How Charge Flows
Examples
Direct Alternating
Two directions
3. Electrons flow in the wire from a(n) to a(n) terminal.
Conductors and Insulators
terminal
(page 605)
4. What is an electrical conductor? 5. What is an electrical insulator? 6. Is the following sentence true or false? Metals are good conductors because they do not have freely moving electrons.
Physical Science Guided Reading and Study Workbook
■
Chapter 20 181
Name ___________________________ Chapter 20
Class ___________________
Date _____________
Electricity
Match each material to the category of a conductor or insulator. Material Category 7. 8. 9. 10. 11.
Copper Plastic Rubber Silver Wood
Resistance
a. conductor b. insulator
(page 605)
12. Explain why the current is reduced as electrons move through a conductor.
13. Circle the letter of each factor that affects a material’s resistance. a. its length b. its temperature c. its velocity d. its thickness 14. What is a superconductor?
Voltage
(page 606)
Match each term to its definition. Definition
Term
Ohm’s Law
(page 607)
19. Is the following sentence true or false? According to Ohm’s law, the voltage in a circuit equals the product of the energy and the resistance. 20. Doubling the voltage in a circuit doubles the current if is held constant. 21. Is the following sentence true or false? Doubling the resistance in a circuit will halve the current if voltage is held constant.
182
Physical Science Guided Reading and Study Workbook
a. flow of charge 15. A device that converts chemical energy to electrical energy b. voltage 16. Requires a complete loop c. battery 17. The difference in electrical potential energy between two places in an electric field 18. Is the following sentence true or false? Three common voltage sources are batteries, solar cells, and generators.
