Help would be good. I\'m really struggling with this stuff! 1.) A wire loop of r

Question

Help would be good. I'm really struggling with this stuff!

1.) A wire loop of radius 0.50 m lies so that an external magnetic field of magnitude 0.30 T is perpendicular to the loop. The field reverses its direction, and its magnitude changes to 0.10 T in 2.5 s. Find the magnitude of the average induced emf in the loop during this time.

r = 3.00 cm, as shown in the end view of the figure below. The solenoid is 23.0 cm long and wound with 106 turns of wire.

(a) If the current in the solenoid is 4.00 A, what is the magnetic flux through the square loop?
T

Explanation / Answer

1-? = -?? / ?t
? = -A?B / ?t
? = -?(0.50 m)

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