The electrons flow in a wire is due to

A. a potential difference across its ends.
B. a difference in potential energy across its ends.
C. an imbalance of charges in the wire.
D. none of the above


Answer: A

Environmental & Atmospheric Sciences

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?What type of rate is lower in more developed countries as compared to less-developed countries and why?

Fill in the blank(s) with the appropriate word(s).

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Currents are more intense on the ________ side of the North Pacific and North Atlantic Oceans.

A. eastern B. southern C. western D. northern E. None of these is correct; they are not more intense on one side.

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Why are all air masses labeled either "polar," "arctic" or "tropical"?

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Environmental & Atmospheric Sciences