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5 Cards in this Set
- Front
- Back
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State the equation for force in electromagnetic machines. |
F = BIL B = magnetic field strength I = current L = length of wire |
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Equation for total magnetic flux |
Ø = BA B = magnetic field strength A = area |
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State Faraday's law |
The induced e.m.f is directly proportional to the rate of change of flux linkage. |
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In what 2 situations is an e.m.f produced? |
1. When there is movement between conductor and a magnet. 2. When lines of flux are cut. |
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State lenz's law. |
The induced e.m.f is always in such a direction as to oppose the change that caused it. |
