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anonymous
 one year ago
a 1.2 m long steel rod moves through a uniform magnetic field of 0.020 T at 20 m/s. What emf is induced between the two ends of the steel rod?
A. 0.60 V
B. 0.48 V
C. 0.36 V
D. 0.50 V
*will draw inside!
anonymous
 one year ago
a 1.2 m long steel rod moves through a uniform magnetic field of 0.020 T at 20 m/s. What emf is induced between the two ends of the steel rod? A. 0.60 V B. 0.48 V C. 0.36 V D. 0.50 V *will draw inside!

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434439190034:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the inner circles are shaded darker :)

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1inside our rod the Lorentz force is acting on the free electrons: dw:1434439163697:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1at the equilibrium thos forces, the lorentz force and the electrostatic force have the same magnitude, so we can write: \[\Large eE = evB\] and then: \[\Large V = vBL\] being L the length of the rod, and V the emf

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok! what do we plug in? :/

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1\[V = vBL = 20 \times 0.02 \times 1.2 = ...volts\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0we get 0.48! so choice B is the solutoin?

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

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yay!thanks!! okay, last one!!:)
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