Faraday's law can be written as: &=-Nd d&B dt This can be re-arranged to give: Edt = - NdPB. Remember that the EMF, &, i

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Faraday S Law Can Be Written As Nd D B Dt This Can Be Re Arranged To Give Edt Ndpb Remember That The Emf I 1 (80.74 KiB) Viewed 28 times

Faraday's law can be written as: &=-Nd d&B dt This can be re-arranged to give: Edt = - NdPB. Remember that the EMF, &, is the voltage. In the questions below it is useful to think about integrating this expression over the relevant time periods. 1. According to Faraday's law, what is the magnitude of the total area under ONE SIDE of the graph? Here, one side means the part of the curve that is either the magnet entering or leaving (as a hint: they both should be the same!). (To get the symbol in the box, type Phi) 2. Over the course of the magnet's fall, what will be the TOTAL change in flux through the coils? Here, consider both the magnitude and the sign of the area under both sides of the graph. 3. Which of the following variables is the size of the peak (i.e. the highest magnitude voltage on the graph) proportional to? O Velocity O Number of Turns Orientation of Magnet 4. In these experimental results, the second peak has a larger magnitude than the first peak - why? The magnet has a stronger magnetic field upon exiting the coil due to Faraday's Law. (No answer given) They should be the same, it is experimental error The magnet slows down through the coil due to Lens' Law The magnet exits the coil faster than it entered, due to gravity. The magnet has a stronger magnetic field upon exiting the coil due to Faraday's Law.