Answers: 1
is the change in magnetic field which is mathematically represented as 
![d\phi = [B_f - B_i ] * A * cos\theta](/tpl/images/0714/5672/95674.png)
given that the axis of the coil is parallel to the field 
![A = 3.142 * [1.1*10^{-2}]^2](/tpl/images/0714/5672/e57c0.png)
![A = 3.8 *10^{-4] \ m^2](/tpl/images/0714/5672/12642.png)
![d\phi = [0 - 0.14 ] * 3.8*10^{-4}](/tpl/images/0714/5672/8fa39.png)
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An 1300-turn coil of wire that is 2.2 cmcm in diameter is in a magnetic field that drops from 0.14 T...
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