Four amperes of current exist in the primary coil of a transformer. The voltage across the primary coil is 120 V. What is the power output of the secondary coil?
A) 30 W
B) 120 W
C) 480 W
D) 960 W
E) need more information
Answer: C
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You see colors in a rainbow because of
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If heat death results in a maximum amount of entropy, then what does this say about entropy at the beginning of the universe?
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