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Physics help help help help Physics?
State how these effect the induction of current when a bar magnet is used in a coiled conductor:
a) The number of coil windings is increased
b) The speed of the magnet relative to the coil is increases
c) The strength of the angnet is increased
d) The magnet and coil move at the same speed in the same direction
Please help me on this. I need to answer this to do my Exam and im Stuck
2 Answers
- skraithLv 51 decade agoFavorite Answer
All of the answers to your questions can be answered by taking a look at Faraday's law. I included a link below to a quick explanation. It includes both number of windings of the coil (N) as well as magnet strength (B) so just look at the equation for what happens when these variables increases.
The ones that might give you a problem are the ones regarding velocity. But in looking at the equation the whole thing is effectively a time derivative which IS velocity. So, what happens when the whole thing increases (b) and when the two velocities are the same (d).
