Which statement about an electromagnetic nail is NOT TRUE?
a. Steady magnetic lines of induction surround a battery-powered electromagnetic nail.
b. The current in electromagnetic nail demagnetizes the iron nail.
c. The magnetic field lines produced resemble that of a bar magnet.
d. The magnetic field strength is proportional to the nail's current.

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Answers

2015-10-11T18:25:36+08:00
The answer is letter C
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