How many turns should a solenoid of cross-sectional area 3.5times10^-2 m^2 and length 0.25 m have...

Question

Question

How many turns should a solenoid of cross-sectiona

science physics

Answer 1

Answer #1

GIVEN:A=3.5*10^-2
l=0.25m
L=40mH

Self inductance:

L= $\mu$ 0N^2 A/l

N=sqrt((L*l)/ $\mu$ 0A)=sqrt((40*10^-3*0.25)/(4*pi*10^-7*3.5*10^-2))=477

Answer 2

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