1.

The magnetic field of the solenoid is 18.84mT, the current is 30A. Calculate the number of turns per unit length if the core is air.(a) 1500 turns/m(b) 1000 turns/m(c) 500 turns /m(d) 2000 turns/m

Answer» Correct choice is (c) 500 turns /m

To explain: The magnetic field in a solenoid is given by:

B=μnI

Substituting the values in the given values in the equation n=500 turns/m.


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