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Results tagged with electromagnetic-induction
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user 153810
This tag is for questions regarding to electromagnetic induction, a process in which a conductor is put in a particular position and magnetic field keeps varying or magnetic field is stationary and a conductor is moving. Electromagnetic Induction was first discovered way back in the 1830’s by Michael Faraday.
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How doI find the average induced emf in a coil given the rate of change of flux density, and...
The magnetic flux density changes from +10 T to -10T in 5 seconds. The area of the coil is 2.5 m^2. What is the average emf induced?
By Faraday's law, this will be equal to the change in magnetic fl …
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What is magnetic flux? How is it related to Faraday's law?
For example, how do we explain Faraday's wheel using Faraday's law? There should be no emf induced since the flux is constant. Also, if we are given a magnetized material, and we somehow manage to cha …
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How does Lenz law conserve energy in this case?
A magnet is falling into the coil as shown. The current in the coil creates a magnet as shown ( by the right-hand grip rule ). Now, as the magnet falls towards the coil, the magnetic field strength in …
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Why is there an emf induced across the width of a metal sheet when it is moved across a unif...
By Faraday's law, the flux is constant, so there will be no emf. But each electron in the metal sheet is moved at some speed, so it will experience a force, and as a result, electrons will accumulate …
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