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1. ConcepTest 17.1a Electric Potential Energy I

electron. proton. electron. -. +. proton. 1. ConcepTest 17.1a Electric Potential Energy I. 1) proton 2) electron 3) both feel the same force 4) neither – there is no force 5) they feel the same magnitude force but opposite direction.

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1. ConcepTest 17.1a Electric Potential Energy I

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  1. electron proton electron - + proton 1. ConcepTest 17.1aElectric Potential Energy I 1)proton 2)electron 3)both feel the same force 4) neither – there is no force 5) they feel the same magnitude force but opposite direction A proton and an electron are in a constant electric field created by oppositely charged plates. You release the proton from the positive side and the electron from the negative side. Which feels the larger electric force?

  2. electron proton electron - + proton 2 ConcepTest 17.1bElectric Potential Energy II 1)proton 2)electron 3)both feel the same acceleration 4) neither – there is no acceleration 5) they feel the same magnitude acceleration but opposite direction A proton and an electron are in a constant electric field created by oppositely charged plates. You release the proton from the positive side and the electron from the negative side. Which has the larger acceleration?

  3. electron proton electron - + proton 3 ConcepTest 17.1cElectric Potential Energy III 1)proton 2)electron 3)both acquire the same KE 4) neither – there is no change of KE 5) they both acquire the same KE but with opposite signs A proton and an electron are in a constant electric field created by oppositely charged plates. You release the proton from the positive side and the electron from the negative side. When it strikes the opposite plate, which one has more KE?

  4. +1 +1 +1 +1 d d d +2 d 3 Both took the same amount of work 4 ConcepTest 17.2Work and Potential Energy 2 Which group of charges took more work to bring together from a very large initial distance apart? 1

  5. A B 5. ConcepTest 17.3aElectric Potential I 1)V > 0 2)V = 0 3)V < 0 What is the electric potential at point A?

  6. A B 6 ConcepTest 17.3bElectric Potential II 1)V > 0 2)V = 0 3)V < 0 What is the electric potential at point B?

  7. -Q +Q +Q -Q 7 ConcepTest 17.4Hollywood Square 1)E = 0 V = 0 2)E = 0 V 0 3)E  0 V  0 4) E  0 V= 0 5) E = V regardless of the value Four point charges are arranged at the corners of a square. Find the electric field E and the potential V at the center of the square.

  8. 1 2 3 +Q –Q 4 8. ConcepTest 17.5aEquipotential Surfaces I 5) all of them At which point does V = 0?

  9. +2mC +2mC +2mC +1mC -2mC +1mC x x x -1mC -2mC +1mC -2mC -1mC -1mC 1) 2) 3) 9. ConcepTest 17.5bEquipotential Surfaces II Which of these configurations gives V = 0 at all points on the x-axis? 4)all of the above 5)none of the above

  10. +2mC +2mC +2mC +1mC -2mC +1mC x x x -1mC -2mC +1mC -2mC -1mC -1mC 1) 2) 3) 10. ConcepTest 17.5cEquipotential Surfaces III Which of these configurations gives V = 0 at all points on the y-axis? 4)all of the above 5)none of the above

  11. A C Q B D E 11. ConcepTest 17.6Equipotential of Point Charge 1)A and C 2)B and E 3)B and D 4) C and E 5) no pair Which two points have the same potential?

  12. 3 2 1 4 P 12 ConcepTest 17.7aWork and Electric Potential I 1)P 1 2)P 2 3)P 3 4) P 4 5) all require the same amount of work Which requires the most work, to move a positive chargefrom P to points 1, 2, 3 or 4 ? All points are the same distance from P.

  13. 3 2 1 4 P 13. ConcepTest 17.7bWork and Electric Potential II 1)P 1 2)P 2 3)P 3 4) P 4 5) all require the same amount of work Which requires zero work, to move a positive chargefrom P to points 1, 2, 3 or 4 ? All points are the same distance from P.

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