Capacitors in Combination: Suppose you have two capacitors and want to use them to store the maximum amount of energy by connecting them across a voltage source. You should connect them
A. in series across the source.
B. in parallel across the source.
C. It doesn't matter because the stored energy is the same either way.
Answer: B
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Smaller worlds generally have thinner lithospheres
Indicate whether the statement is true or false
AM radio stations have greater range than FM stations because
a. AM is more efficient than FM. b. they have more powerful transmitters. c. their lower frequency radio waves reflect off the ionosphere. d. none of the above
If a negative charge is placed inside a hollow isolated conductor that is originally neutral and the charge does not touch that conductor at any time:
a. both the inner and outer surfaces will become negative. b. both the inner and outer surfaces will remain neutral. c. the outside surface of the conductor will become positively charged. d. the inside surface of the conductor will become positively charged.
If three 2.4-µF capacitors are connected in series, what is the combined capacitance?
a. 8.0E–7 F b. 1.4E–5 F c. 7.2E–8 F d. 2.4E–6 F e. 4.6E–6 F