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The magnetic flux through a coil of wire containing two loops changes from -50Wb to plus 38Wb in 0.42sWhat is the emf inducced in the coil?
Ertyuiopas
(-50-38)2/o.42=419.047619
Wiki User
∙ 14y ago
Hanni
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What does magnetoresistance do?
Magnetoresistance is an effect observed in (ferro)magnetic conductors. When applying an external magnetic field to the conductor, the resistance of the conductor changes. The resistance is minimized when the magnetic field is aligned parallel to the conductor, and maximized when the magnetic field is aligned perpendicular to the conductor. This effect was first observed by W. Thomson in 1856, and changes in resistance are usually below 1% at room temperature and higher at lower temperatures <5K For further reading: http://en.wikipedia.org/wiki/Magnetoresistance http://en.wikipedia.org/wiki/Electron_scattering
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answer
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