6. Two equal positive charges are propelled against each other. (a) the charges will slow down, then reverse their velocities (b) the sum of instantaneous electric potential and kinetic energies is constant (c) total momentum is constant (d) all of the above. 7. Two equal but opposite charges are separated by some distance. (a) the charges will approach each other (b) on collision the charges will neutralize each other (c) If fused, the resulting object will heat up (d) all of the above. 8. An electron-volt is a unit of (a) voltage (b) momentum (c) mass (d) energy 9. An electron between positive and negative plates will (a) accelerate towards the negative plate (b) accelerate towards the positive plate (c) stay at rest (d) move parallel to the plates 10. A conservative force * (a) Is path independent (b) Is not affected by friction (c) produces work (d) all of the above 11. Equipotential surfaces (a) are always perpendicular to electric field lines (b) sometimes intersect (c) represent multi-valued energies (d) describe orbits of moving charges
6. Two equal positive charges are propelled against each other.
(a) the charges will slow down, then reverse their velocities
(b) the sum of instantaneous electric potential and kinetic energies is constant
(c) total momentum is constant
(d) all of the above.
7. Two equal but opposite charges are separated by some distance.
(a) the charges will approach each other
(b) on collision the charges will neutralize each other
(c) If fused, the resulting object will heat up
(d) all of the above.
8. An electron-volt is a unit of
(a) voltage
(b) momentum
(c) mass
(d) energy
9. An electron between positive and negative plates will
(a) accelerate towards the negative plate
(b) accelerate towards the positive plate
(c) stay at rest
(d) move parallel to the plates
10. A conservative force *
(a) Is path independent
(b) Is not affected by friction
(c) produces work
(d) all of the above
11. Equipotential surfaces
(a) are always perpendicular to electric field lines
(b) sometimes intersect
(c) represent multi-valued energies
(d) describe orbits of moving charges
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