# INDUCTANCE

Discussion in 'Homework Help' started by bujak18, Jan 13, 2009.

1. ### bujak18 Thread Starter Active Member

Nov 12, 2008
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Determine the total inductance and the circuit current of a 4-H inductor and a 6-H inductor series connected to a 400-Hz, 80-V supply. also determine the voltage across the 4-H inductor.

Apr 5, 2008
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3. ### mik3 Senior Member

Feb 4, 2008
4,846
63
If you have two inductors in series the total inductance is the sum of each of the inductors value. In your case is 6+4=10 H.

The impedance of the total inductance is:

XL=2*pi*f*L=2*pi*400*10=25.1K

Thus the current flowing will be:

I=V/XL=80/25.1K=3.2mA

The voltage across the 4H inductor:

XL4=2*pi*f*L=10K

thus

VL4=XL4*I=32V

4. ### bujak18 Thread Starter Active Member

Nov 12, 2008
49
0
sry i don't quite understand do you know the exact answer? pls.

5. ### mik3 Senior Member

Feb 4, 2008
4,846
63
The current flowing is 3.2mA and the voltage across the 4H inductor is 32V.

6. ### bujak18 Thread Starter Active Member

Nov 12, 2008
49
0
go to my other threads on this forum pls and see if you can answer them