Question
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 = 5.3 A at t = t1 = 14 s, remains constant at this value until t = t2 when it decreases linearly to a value I4 = -5.3 A at t = t4 = 29 s, passing through zero at t = t3 = 24 s. A conducting loop with sides W = 39 cm and L = 57 cm is fixed in the x-y plane at a distance d = 25 cm from the wire as shown.
1)
What is the magnitude of the magnetic flux ? through the loop at time t = t1 = 14 s?
2)
What is ?1, the induced emf in the loop at time t = 7 s? Define the emf to be positive if the induced current in the loop is clockwise and negative if the current is counter-clockwise.
3)
What is ?2, the induced emf in the loop at time t = 16 s? Define the emf to be positive if the induced current in the loop is clockwise and negative if the current is counter-clockwise.
4)
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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 = 5.3 A at t = t1 = 14 s, remains constant at this value until t = t2 when it decreases linearly to a value I4 = -5.3 A at t = t4 = 29 s, passing through zero at t = t3 = 24 s. A conducting loop with sides W = 39 cm and L = 57 cm is fixed in the x-y plane at a distance d = 25 cm from the wire as shown. What is the magnitude of the magnetic flux ? through the loop at time t = t1 = 14 s? What is ?1, the induced emf in the loop at time t = 7 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 = 16 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 = 24 seconds? There is no induced current at t = t3 What is ?4, the induced emf in the loop at time t = 26.5 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
9