1) 2) 3) 4) 5) An infinite straight wire carries a current I that varies with ti

Question

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An infinite straight wire carries a current I that varies with time as shown above. It increases from 0 at t = 0 to a maximum value I1 = 2.9 A at t = t1 = 15 s, remains constant at this value until t = t2 when it decreases linearly to a value I4 = -2.9 A at t = t4 = 26 s, passing through zero at t = t3= 23 s. A conducting loop with sides W = 36 cm and L = 77 cm is fixed in the x-y plane at a distance d = 37 cm from the wire as shown. What is the magnitude of the magnetic flux ? through the loop at time t = t1 = 15 s? What is ?1, the induced emf in the loop at time t = 7.5 s? Define the emf to be positive if the induced current in the loop is clockwise and negative if the current is counter-clockwise. What is ?2, the induced emf in the loop at time t = 17 s? Define the emf to be positive if the induced current in the loop is clockwise and negative if the current is counter-clockwise. What is the direction of the induced current in the loop at time t = t3 = 23 seconds? What is ?4, the induced emf in the loop at time t = 24.5 s? Define the emf to be positive if the induced current in the loop is clockwise and negative if the current is counter-clockwise.

Explanation / Answer

clockwise

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