A 19cm length of .277mm diameter nichrome wire is welded into a circular loop. The loop is placed between the poles of an electromagnet and a field of .55T is switched on in a time of 14ms. Super stuck on this. :(
EMF = .55T * Area*loops / time
EMF =- .55 * (pi*.19m^2) * 1 / .0016s
EMF = - 50.893 Volts
Final answer is
-50.893 volts. Lenz law says that it should be negative.
Please note, that the overall question of concern, is that it is asking for the induced CURRENT (in Amps) not the voltage....
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