Apply Faraday law of induction
e = A dB/ dt
e = A ( B2- B1)/ dt
e dt = AB2 - A B1
B2 = edt + A B1/ A
= 2.1 ( 1.23) + 1.02 ( 0.6)/1.02
= 3.13 T
(b)
induced emf = B*(A2-A1)/t
e*t/B = A2-A1
A2 = A1 + e*t/B
A2 = 1.02 + 2.1*1.23/0.60
A2 = 5.325 m2
Section 3 A loop of wire sits in a uniform magnetic field, everywhere pointing toward you....
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