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The current in a very long solenoid with density of turns n = 26 (1 /...

The current in a very long solenoid with density of turns n = 26 (1 / m) and radius R = 1.26cm changes with time in the form I = 12.1cos (πt / 3) A. What is the magnitude of the field induced at an arbitrary distance r outside the solenoid?

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Answer #1

(1) raius of solenoid R = 0.0126 m

number of turns per meter n = 26

current varied as;

solution:

The changing magnetic flux inside the solenoid, induces the electric field

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