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anonymous

  • one year ago

Suppose a magnetic field of 1.0 T is applied to an area within a circular loop of wire. The strength of the field is then increased to 4.0 T. By what factor is the magnetic flux changed? A. 2 B. 4 C. 0.5 D. 0.25

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  1. Michele_Laino
    • one year ago
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    magnetic flux is given by the subsequent formula: \[\Large \Phi = BS\]

  2. Michele_Laino
    • one year ago
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    where S is the area enclosed by our circular loop

  3. anonymous
    • one year ago
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    ok! what do we plug in?

  4. Michele_Laino
    • one year ago
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    so we have: \[\Large \begin{gathered} {\Phi _1} = 1 \times S = S \hfill \\ {\Phi _2} = 4 \times S = 4S \hfill \\ \hfill \\ \frac{{{\Phi _2}}}{{{\Phi _1}}} = \frac{{4S}}{S} = 4 \hfill \\ \end{gathered} \]

  5. anonymous
    • one year ago
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    ohhh so our solution is 4? :O

  6. Michele_Laino
    • one year ago
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    yes!

  7. anonymous
    • one year ago
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    yay! thanks!:)

  8. Michele_Laino
    • one year ago
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    :)

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