Answer:
b.only when the current in the first coil changes.
Explanation:
An induced current flow in the second coil only when there is a change in current in the first cool. A steady current will produce no change in flux (due to magnetic effect of a current) by the first coil, and according to Faraday, induced current is only produced when there is a change in flux linkage.
Answer:
you'll see rocks that have been there for years
Your answer is 2.5 x 10^(11).
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Answer:
90 J
Explanation:
W=fd
W=(75)(1.2)
W= 90 J