Refer to the figure above. Assume the switch in the primary has been closed for a few minutes. Then there is a current in the
1) primary, but not the secondary.
2) secondary, but not the primary.
3) primary and secondary.
4) neither the primary nor the secondary.
When the switch is opened suddenly, current in the primary
5) decreases, while current builds up in the secondary.
6) increases, while current decreases in the secondary.
Answer: 1, 5
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Your favorite radio station is located due north of your house and broadcasts using a horizontal electric dipole antenna directed north-south. To receive this signal you need to
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A. 3.1 mT B. 6.2 mT C. 13 mT D. 25 mT
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