1.

The current in a solenoid is 30A, the number of turns per unit length is 500 turns per metre. Calculate the magnetic field if the core is air.(a) 18.84T(b) 18.84mT(c) 1.84T(d) 1.84mT

Answer» The correct option is (b) 18.84mT

The best explanation: The magnetic field in a solenoid is given by:

B=μnI

Substituting the values in the given values in the equation, B=18.84mT.


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