b) An electric motor has 50 turns of rectangular coil with dimension of 15 cm x 30 cm, rotating at 18 revs in a uniform magnetic fieldfof density 25 uT perpendicular to an axis of rotation. Sketch a graph to show the alternating e.m.f varies with time. With the help of the diagram, compare the position of the coil (relative to flux line) at instant t=% Ts and t= T s. Provide ONE picture of everyday device in which applies the same concept as mentioned in question 4 b) (Section B). Based on the chosen device, explain the basic principles and mechanism behind the onera

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b) An electric motor has 50 turns of rectangular coil with dimension of 15 cm x 30 cm, rotating
at 18 revs in a uniform magnetic fieldof density 25 uT perpendicular to an axis of rotation.
Sketch a graph to show the alternating e.m.f váries with time.
With the help of the diagram, compare the position of the coil (relative to flux line) at instant
t=4 Ts andt= T s.
Provide ONE picture of everyday device in which applies the same concept as mentioned in
question 4 b) (Section B). Based on the chosen device, explain the basic principles and
mechanism behind the operation.
Transcribed Image Text:b) An electric motor has 50 turns of rectangular coil with dimension of 15 cm x 30 cm, rotating at 18 revs in a uniform magnetic fieldof density 25 uT perpendicular to an axis of rotation. Sketch a graph to show the alternating e.m.f váries with time. With the help of the diagram, compare the position of the coil (relative to flux line) at instant t=4 Ts andt= T s. Provide ONE picture of everyday device in which applies the same concept as mentioned in question 4 b) (Section B). Based on the chosen device, explain the basic principles and mechanism behind the operation.
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