Suppose you have two straight cylindrical conducting wires parallel to each other. The sameamount of current runs in the two wires but with opposite directions. You can think of the twowires as a rectangular coil with two infinite sides. The radius of the cylindrical wires is r = 0.3 cmand they are separate by a distance d = 1m in air. Calculate the coefficient of self inductance of thecoil per unit length.

For solving the problem, first, we have to determine the magnetic field in terms of current I and…

Answered: Suppose you have two straight…

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A 2.5 m long coil containing 250 loops is wound on an iron core (average u = 1850µ.) along with a second coil of 150 loops. The loops of each coil have a radius of 2.50 cm. If the current in the first coil drops uniformly from 12.0 A to zero in 98.0 ms, determine the mutual inductance M and the emf induced in the second coil.
A physics student observes that the current in a coil of conducting wire goes from i, = 0.200 A to i, = 1.50 A in a time interval of At = 0.350 s. Assuming the coil's inductance is L = 5.00 mH, what is the magnitude of the average induced emf (in mV) in the coil for this time interval?
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Two coils are at fixed locations. When coil 1 has no current and the current in coil 2 increases at the rate 18.1 A/s, the emf in coil 1 is 25.6 mV. (a) What is their mutual inductance? (b) When coil 2 has no current and coil 1 has a current of 6.10 A, what is the flux linkage in coil 2?
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