SBCC PHYS 101 - Lecture10 Chapters 22 23 (40 pages)

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Lecture10 Chapters 22 23



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Lecture10 Chapters 22 23

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Pages:
40
School:
Santa Barbara City College
Course:
Phys 101 - Conceptual Physics
Unformatted text preview:

Reading Homework for 4 13 Read Chapter 24 Magnetism Read Chapter 25 Electromagnetic Induction 25 1 Electromagnetic Induction 25 2 Faraday s Law 25 3 Generators and Alternating Current Reading Response Questions on Moodle Chapter 24 due Sunday 4 10 at 11 00 pm Chapter 25 due Wednesday 4 13 at 6 00 pm Homework Problems on Moodle Practice problems for Chapters 22 23 Chapter 22 Electrostatics A plastic strip rubbed with cotton becomes positively charged Does the plastic strip A B C D Gain protons from the cotton Gain protons from the air Lose electron to the cotton Lose electrons to the air In which case does charge q experience the greater force a Case A b Case B c The force is the same in both cases d It cannot be determined How is the ball affected by the positive point charge a It is attracted toward it b It is repelled from it c It is unaffected by it A neutral metal sphere is touched by a negatively charged metal rod Electrons are transferred from the to the and the sphere acquires a charge A B C D E Sphere rod negative Sphere rod positive Rod sphere negative Rod sphere positive None of the above A positively charged soda can is touched by a person standing on the ground The soda can becomes neutral because A B C D Electrons pass from can to person Protons pass from can to person Electrons pass from person to can Protons pass from person to can X X X X X X X A B X X X Top view Balloon A is negatively charged and repels balloon B The electric field of balloon b is directed A Towards B B Away from B Electric Potential Electric Potential Chapter 23 Electric Current When you start you car electrons migrate from the battery to the starter motor and back to the battery How long does it take a single elctron to complete the circuit A B C D Less than a millisecond About 1 second A few minutes About a day What happens when we add a second light bulb in series with the first Both bulbs light up with A B C D the same brightness as the single bulb brighter than the single bulb dimmer than the single bulb One bulb will be brighter than the other What happens to the brightness of bulb A when the switch is closed and B lights up A No change in brightness of A B A is brighter than before C A is dimmer than before


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