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John K
John K asked in Science & MathematicsPhysics · 1 decade ago

An emf is induced in a conducting loop of wire 1.13 m long as its shape is changed from square to circulular?

Find the average magnitude in Volts of the induced emf if the change in shape occurs in 4.26 s and the local 0.127 T magnetic field is perpendicular to the plane of the loop.

Update:

EDIT: Tried your answer and it was wrong

2 Answers

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  • Jim
    Lv 7
    1 decade ago
    Favorite Answer

    Area of square loop = (1.13)² = 1.2769 m²

    Area(A) of circular loop with a circumference = 4(1.13) = 4.52m

    A = πR² = π(4.52/2π)² = 1.6258 m²

    delta A = 1.6258 - 1.2769 = 0.3489 m²

    delta A/t = 0.3489/4.26 = 0.08190 m²/s

    emf = B(detaA/t) = 0.127(0.08190) = 0.0104 v ANS

  • mangus
    Lv 4
    5 years ago

    A unmarried undertaking loop of cord has a community of 8.0×10?2 m2 and a resistance of one hundred ? . Perpendicular to the plane of the loop is a magnetic container of power 0.50 T At what cost (in T/s) could this container replace if the led to present day in the loop is to be 0.35 A

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