© 2012 pearson education, inc.. batteries: constant potential electrochemical devices do not touch...
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© 2012 Pearson Education, Inc.
© 2012 Pearson Education, Inc.
© 2012 Pearson Education, Inc.
Batteries: constant potential electrochemical devices
Do not touch wire to both ends of car battery, will create heat and hydrogen gas, boom!
© 2012 Pearson Education, Inc.
Two conducting spheres, one charged other neutral
© 2012 Pearson Education, Inc.
A particle follows the trajectory shown from initial position i to final position f. The potential difference V is
A.
B.
C.
D.
E.
100 V.
50 V.
0 V.
50 V.
100 V.
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A proton is released from rest at the dot. Afterward, the proton
A. Remains at the dot.
B. Moves upward with steady speed.
C. Moves upward with an increasing speed.
D. Moves downward with a steady speed.
E. Moves downward with an increasing speed.
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The electric field at the dot is
A.
B.
C.
D.
E.
10î V/m.
10î V/m.
20î V/m.
30î V/m.
30î V/m.
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Metal wires are attached to the terminals of a 3 V battery. What is the potential difference between points 1 and 2?
A. 6 V.
B. 3 V.
C. 0 V.
D. Undefined.
E. Not enough information to tell.
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What is the electric field magnitude E at point 5?
(a) 0 N/C(b) 1500 N/C(c) 3000 N/C(d) 6000 N/C(e) Not enough information
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Which set of equipotential surfaces matches this electric field?
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Metal spheres 1 and 2 are connected by a metal wire. What quantities do spheres 1 and 2 have in common?
A. Same potential.
B. Same electric field.
C. Same charge.
D. Both A and B.
E. Both A and C.
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Two identical balloons are connected after blowing one up to about ½ its maximum volume, the other to about ¼ its maximum volume. When the valve is turned so air can equalize between the two balloons
(a) The balloons will become equal in size.(b) The large balloon will become a bit smaller, the
small balloon a bit bigger. (c) The large balloon will become bigger, the small balloon smaller. (d) Nothing happens.
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Capacitors
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What is the capacitance of these two electrodes?
A. 8 nF.
B. 4 nF.
C. 2 nF.
D. 1 nF.
E. Some other value.
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If the plates are moved further apart, the electric field magnitude at point 5 will
A. Increase.
B. Stay the same.
C. Decrease.
D. Don't know how to proceed.
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The equivalent capacitance is
A. 9 F.
B. 6 F.
C. 3 F.
D. 2 F.
E. 1 F.
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The equivalent capacitance is
A. 9 F.
B. 6 F.
C. 3 F.
D. 2 F.
E. 1 F.
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This is a graph of the x-component of the electric field along the x-axis. The potential is zero at the origin. What is the potential at x 1m?
A. 2000 V.
B. 1000 V.
C. 0 V.
D.
E.
1000 V.
2000 V.
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At which point is the electric field stronger?
A. At xA.
B. At xB.
C. The field is the same strength at both.
D. There’s not enough information to tell.
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An electron is released from rest at x 2 m in the potential shown. What does the electron do right after being released?
A. Stay at x 2 m.
B. Move to the right ( x) at steady speed.
C. Move to the right with increasing speed.
D. Move to the left (x) at steady speed.
E. Move to the left with increasing speed.
© 2012 Pearson Education, Inc.