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Serway_CP_poll_ch16

# Serway_CP_poll_ch16 - Two protons each of charge 1.6 x...

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Two protons, each of charge 1.6 x 10 -19 C are 2 x 10 -5 m apart. What is the change in potential energy if they are brought 10 -5 m closer together? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 1.15 x 10 -23 J 2. 3.20 x 10 -19 J 3. 3.20 x 10 -16 J 4. 1.60 x10 -14 J

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There is a hollow, conducting, uncharged sphere with a negative charge inside the sphere. Consider the electrical potential at the inner and outer surfaces of the sphere 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. The potential on the inner surface is greater. 2. The potential on the outer surface is greater. 3. The potentials on both surfaces are zero. 4. The potentials on both surfaces are equal but not zero.
There are two capacitors with C A bigger than C B and they are connected in series with a battery. 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. There is more charge stored on C A. 2. There is more charge stored on C B 3. There is the same charge stored on each capacitor. 4. There is the same potential difference across both capacitors.

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The potential at P 1 is 7 V and the electric field there is 3 V/m. When I move to P 2 , the electric field decreases. However, if I now triple the size of the charge +Q, the electric field at point P 2 becomes 3 V/m. What is the potential at P 2 now? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 7/3 V 2. 7 V 3. 12 V 4. 21 V
The potential at P 1 is 7 V and the electric field there is 3 V/m. When I move to point P 2 the potential decreases. However, if I now triple the size of charge +Q the potential at point P 2 now becomes 7 V. What is electric field at P 2 now? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 1 V/m 2. 3 V/m 3. 5.2 V/m 4. 9 V/m

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An electron is released from rest at the negative plate of a parallel plate capacitor. If the distance across the plate is 5 mm and the potential difference across the plate is 5 V, with what velocity does the electron hit the positive plate? (m electron = 9.1 x 10 -31 kg, q e = 1.6 x 10 -19 C) 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 2.65 x 10 5 m/s 2. 5.30 x 10 6 m/s 3. 1.06 x 10 6 m/s 4. 1.33 x 10 6 m/s
If two parallel, conducting plates have equal positive charge, the electric field lines will 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. leave one plate and go straight to the other plate 2. leave both plates and go to infinity 3. enter both plates from infinity 4. none of the choices

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If the distance between two isolated parallel plates that are oppositely charged is doubled, the electric field between the plates is essentially unchanged. However, 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
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