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.

The magnetic field of the solenoid is 18.84mT, the current is 30A. Cal

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» D. 2000 turns/m