GRADE 12 Pass the Ball-MOMENTUM AND IMPULSE

1. PASS THE BALL

2. HOW TO PLAY Pass the balls. When the music stops, whoever has a ball must stand up and either ask or answer the question on the PowerPoint.

3. PASS THE BALL! STOP!

4. QUESTION: The flow of electric charge in a conductor is called: a) Voltage b) Electric current c) Resistance d) Power ANSWER: B. ELECTRIC CURRENT

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6. QUESTION: In conventional current notation, current is assumed to flow from: a)Positive to negative terminal. b)Negative to positive terminal. c)Electrons move randomly. d)No net flow occurs. ANSWER: A. positive to negative terminal

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8. QUESTION: Electrons in a conductor actually flow from: a)Positive to negative terminal (conventional current). b)Negative to positive terminal (electron current). c)They don't move, just vibrate. d)It depends on the material. ANSWER: B. NEGAtive to POSItive terminal

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10. QUESTION: The opposition to the flow of electric current in a conductor is called: a)Voltage b)Conductance (opposite of resistance) c)Electrical resistance d) Amperage ANSWER: C . ELECTRICAL RESISTANCE

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12. QUESTION: A material with a high electrical resistance is also known as a(n): a) Conductor b) Insulator c) Semiconductor d) Superconductor ANSWER: B. INSULATOR

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14. QUESTION: The average velocity of electrons drifting through a conductor under an electric field is called: a) Amperage b) Drift velocity c) Resistance d) Conductivity ANSWER: B. DRIFT VELOCITY

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16. QUESTION: A component designed to introduce a specific amount of resistance in a circuit is called a: a) Capacitor b) Diode c) Transistor d) Resistor ANSWER: D . RESISTOR

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18. QUESTION: Which scientist is credited with formulating the relationship between voltage, current, and resistance (Ohm's Law)? a) Andre-Marie Ampere b) Benjamin Franklin c) Georg Simon Ohm d) Alessandro Volta ANSWER: C. GEORG SIMON OHM

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20. QUESTION: Who discovered the relationship between current, magnetic field, and length of conductor (Ampere's Law)? a) Michael Faraday b) James Clerk Maxwell c) Andre-Marie Ampere d) Heinrich Hertz ANSWER: C. ANDRE-MARIE AMPERE

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22. QUESTION: Which term associates with the relationship of current, voltage and resistance through the equation V = IR? ANSWER: ohm’s law

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24. QUESTION: The measurement of a material's ability to oppose electric current flow (reciprocal of conductivity) is what we call________. ANSWER: RESISTIVITY

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26. QUESTION: The number of electrons flowing through a unit area of a conductor per unit time is what we call____. ANSWER: CURRENT DENSITY

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28. QUESTION: A steady current of 3.0 A flows in a wire for 20.0s. (a) How many coulumbs of charge flow through the wire? ANSWER:  

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30. QUESTION: How many current is flowing in a wirein 3.0s if it contains 36C charge? ANSWER: