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Spring review

Spring review . Identify the following true statements?. A proton is attracted to an electron An electron is repelled by a neutron A proton is repelled by another proton Both protons and electrons are free to move around in metals.

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Spring review

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  1. Spring review

  2. Identify the following true statements? • A proton is attracted to an electron • An electron is repelled by a neutron • A proton is repelled by another proton • Both protons and electrons are free to move around in metals

  3. A charged rod is brought near but not touching two neutral conductors. Which arrangement describes the charges on the two spheres? • + - • - + • - - • + +

  4. Which statements are true about conductors and insulators? • Conductors are materials that allow both electrons and protons to freely move • The electrons on insulators are fixed in place • Conductors freely allow electrons to flow while insulators restrict their flow. • Insulators have different degrees of holding power

  5. The charged conductor below could be charged by which of the processes • Negative charge rod through induction • Positive charge rod through induction • Negative rod through conduction • Positive charge rod through conduction

  6. A neutral conductor is placed on a positively charged insulator • The conductor remains uncharged but the charge has been rearranged • The conductor has a positive charge • The conductor has a negative charge

  7. Which of the following statements are true concerning grounding? • Negative charges move to the earth to neutralize a Negatively charged object • Negative charges move from the earth to neutralize a Positivly charged object • An uncharged object becomes charged by the earth • Both 1 and 2

  8. Which statement is true about an electric field? • Are lines of force • Represents the path a positive test charge would move • Are strongest where the lines are closest • All of the above

  9. An electron is placed in an electric field shown below, which of the following statements are true? • The electron is pulled to the left with increasing force • The electron is pulled to the right with increasing force • The electron is pulled to the right with decreasing force -e

  10. Two identical charges experience a force F, are moved twice as far, what is the new force? • F/4 • F/2 • F • 2F • 4F

  11. Two identical charges experience a force F, are moved three times as close, the force is now? • F/3 • F/9 • F • 9F • 3F

  12. Three identical bulbs are connected in series which of the following is true? • The current is the same • The voltage is the same • Both current and voltage is the same

  13. Which of the following is true if the resistance for each bulb is different ? • The current is the same but the voltage drop will change • The voltage drop is the same but the current changes • Both current and voltage is the same

  14. If the resistance of each bulb increases B3 > B2> B1 What can be said about the current in each bulb ? • I1=I2=I3 • I3 >I2>I1 • I3 <I2<I1

  15. If the resistance of each bulb increases B3 > B2> B1 What can be said about the Voltage drop in each bulb ? • V1=V2=V3 • V3 >V2>V1 • V3 <V2<V1

  16. Which of the following is a correct expression for the equivalent resistance • 1/[1/(R4 + R5 + R6)+1/(R2 + R3)] + R1 • R1 + 1/(R2+R3) + 1/(R4 + R5 + R6) • (R2xR3)/(R4+R5+R6) + R1

  17. Which of the following statement describes the best way to hook up and ammeter and voltmeter? • Ammeter in series and Voltmeter in parallel • Ammeter in series and voltmeter in series • Ammeter in parallel and voltmeter in series

  18. Which of the following demonstrates the proper direction of the magnetic field induced by a current carrying wire? • x x 3. 4.

  19. Which of following represents the correct magnetic field induced by a current carrying wire? • x 2. x 3. 4.

  20. Which electromagnet shows the proper polarization? 1. N S. + - 2. N S - + 3.S N - +

  21. A positive charge ion moves to the right in a magnetic field into the page, what direction is the force acting on it? • Up • Down • Left • Right X XXXXXXXXXXXX X XXXXXXXXXXXX

  22. What can be done to increase the speed of a motor? • Increase the current • Increase the magnetic field • Increase the loops of wire • All of the above

  23. The speed of a mechanical wave is dependent on • Wave legnth • Frequency • Period • Medium

  24. Which of the following is not true about light • Light needs a medium to travel in • Light slows down in denser substances • Light travels the fastest in a vacuum • Light is a electromagnetic wave

  25. Which of the following is not true about the refraction of light • When n1 < n2 light bends toward the normal • When n1 > n2 light bends toward the normal • When n1 > n2 light is refracted at all angles

  26. For a given medium as the frequency goes up • The wave-length decreases • The wave-length increases • The speed increases • The speed decreases

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