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anonymous
 one year ago
A coil with an area of 0.10 m^2 is in a magnetic field of 0.20 T perpendicular to its area. It is flipped through 180° so that the part that was up is down. The flip takes 1.0 s. Estimate the average induced emf between the ends of the coil while it is being flipped.
A. 0.020 V
B. 0.040 V
c. 0.0 V
D. 0.010 V
anonymous
 one year ago
A coil with an area of 0.10 m^2 is in a magnetic field of 0.20 T perpendicular to its area. It is flipped through 180° so that the part that was up is down. The flip takes 1.0 s. Estimate the average induced emf between the ends of the coil while it is being flipped. A. 0.020 V B. 0.040 V c. 0.0 V D. 0.010 V

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Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1here the magnetic flux change is: \[\Large \begin{gathered} \Delta \Phi = \Phi \left( {\mathbf{B}} \right)  \Phi \left( {  {\mathbf{B}}} \right) = 2\Phi \left( {\mathbf{B}} \right) = \hfill \\ \hfill \\ = 2 \times 0.10 \times 0.20 = ...Weber \hfill \\ \end{gathered} \]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0we get 0.04?so choice B? :O

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1no, since we have to compute the emf, which is given by the subsequent formula: \[\Large E = \frac{{\Delta \Phi }}{{\Delta t}} = \frac{{0.04}}{1} = ...volts\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ohh okay! that still gets 0.04 though? :/

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1yes! that's right!
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