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+ https//session masteringphysics.com/myct/itemViewTassignmentProblemiID-51697010 | | a. Google Apple Yahoo! Google Maps YouTube Wikipedia News(235). Popular MasteringPhysics C.. Chegg.com hysics wth Calculus Il - PHY2049-U03 -13th 292 Problem 29 51 Problem 29 51 Part A what is the magnitude of the e nduced n the secondary wrang at the instant that the current in the solenod is 32A? Express your answer with the appropriate units A very long straight solenoid with a cross-sectional area of 2.08 cm is wound with 87 7 tums of wire per centinneter Starting at t -0, the current in the solenoid is increasing according to t(t)-(015 A/s)t A secondary winding of 5 tuns encircles the solenoid at ias center, such that the secondary winding has the same cross sectional area as the solencid y Answers GveExplanation / Answer
Inductance of solonoid is L = uo N^2 A/L
L = 4* 3.14 e-7 * 87.7*87.7* 2.08 e -4/(1 e-2)
L = 0.2 mH
induced emf e = L di/dt
from current equation i = 0.175 t^2
t^2 = 3.2/0.175
t = 4.27 secs
emf in secondary coil = 0.2 e -3 * 3.2/4.27
emf e = 0.149 mV
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