When you pay your electric bill, what are you paying for, exactly?
A. The electrical charge you used the previous month
B. The electrical energy you used the previous month
C. The voltage you used the previous month
D. The electrical power you used the previous month
E. None of these choices are correct
Answer: B
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Lenz's Law: As shown in the figure, two parallel wires carry a current I in opposite directions, and this current is decreasing. A rectangular loop is centered between the wires. The direction of the induced current through the resistor R is
A. from a to b. B. from b to a. C. No current is induced.
What would you see if you were on the Moon and facing Earth when people on Earth saw a total lunar eclipse?
What will be an ideal response?
Which type of star spends the longest time as a protostar?
A) G star B) M star C) O star D) B star
If the mass per nucleon in atomic nuclei varied as shown in the fictitious plot above, then nuclear energy would be available from the element iron (atomic no. 26) by the process of nuclear
1) fission. 2) fusion. 3) both. 4) neither. Accordingly, krypton (atomic no. 36) would yield energy by nuclear 5) fission. 6) fusion. 7) both. 8) neither. 9) not enough information to say.