answer all questions please 4. Consider a flat square coil with N 50 koops. The

Question

answer all questions please

4. Consider a flat square coil with N 50 koops. The coil is 20 cm on each side, and has a magnetic field of 03 T passing through The plane of the ular to the magnetic field the field points out of the page. With the magnet coming close to the coil, the magnetic field increases fomuly from BT to STin 4s While the change is taking place, what is the induced emfin the coil? (15 points) 5. Explain and show Faraday's experiment. I5 points) 6, Explain Lenz's law and show how it does complete the Faraday's law. points

Explanation / Answer

4) emf = -n*d(BA)/dt

emf = 50*3.14*0.1^2*(8-3)/4 = 19.625 V

5) faraday's law

when a magnetic flux changes with respect to the time then emf is induced in a coil

6) lenz's law

current is induced due to change of motion of a magnetic field, so directed as to oppose the change in magnetic flux . and it exerts the magnetic force to opposeing the motion of magnetic field.

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