emf (vatts) Figure 48. Waveforms arising fro m a mageet passing through a detect

Question

emf (vatts) Figure 48. Waveforms arising fro m a mageet passing through a detector coil 3) In Experiment 3, a triangle waveform is applied to the source coil. The voltage (and corresponding cur-ote rent) alternately increases with time at a certain rate and then decreases with time at the sam (negative) rate, repeating the cycle at some fre- e con stant quencyf A visual is shown to the right a) Reproduce the sketch shown here, and below it draw the expected magnetic field versus time detector coil versus time Just below this sketch, draw (qualitatively) b) Just below that sketch, draw (qualitatively), the magnetic ux inervping the ualitatively)40 doad. This will be your predicted be for c) waveform for the emfof the detector coil.

Explanation / Answer

i) The bar magnet is introduced into the coil and held at the halfway point.

it belongs to a , b and c .   since when the magnetic is halfway point and not moving, the induced Emf in the coil is 0

ii) The bar magnet is introduced into the coil and immediately withdrawn from the same end it came in.

b)

since the magnet is inserted and withdrawn , induced emf is produced in equal amount in opposite direction

iii)

c)

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