The flow of electrons in an electric circuit move by
A) bumping other electrons.
B) colliding with molecules.
C) interacting with an established electric field.
D) none of the above
Answer: C
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If the potential in a region is given by V(x,y,z) = xy - 3z-2, then the y component of the electric field in that region is
A) x + y - 6z-3. B) -y. C) -x. D) x + y.
Where must the object be located with respect to a concave mirror and its focal point to produce a real image?
Interference effects observed in the early 1800s were instrumental in supporting a concept of the existence of which property of light?
a. polarization b. particle nature c. wave nature d. electromagnetic character
The addition of salt to water affects its
A) crystal composition. B) freezing point. C) viscosity. D) liquidity. E) none of the above