AC FundamentalsAlternating CurrentBasic / Important Electrical FormulasEE Questions / AnswersSingle Phase AC Circuits

Why the circuit Current (I) decrease, when Inductance (L) or inductive reactance (XL) increases in inductive circuit?

 Explain the statement that ” In Inductive circuit, when Inductance (L) or inductive reactance (XL) increases, the circuit Current (I) decrease”
Why the circuit Current (I) decrease, when  Inductance (L) or inductive reactance (XL) increases in inductive circuit?

We know that, I = V / R, 
but in inductive circuit, I = V/XL
So Current in inversely proportional  to the Current ( in inductive circuit.
Let‘s check with an example.. 
Suppose, when Inductance (L) = 0.02H

V=220, R= 10 Ω, L=0.02 H, f=50Hz.

XL = 2πfL = 2 x 3.1415 x 50 x 0.02 = 6.28 Ω

Z = √ (R2+XL2) = √ (102 + 6.282) = 11.8 Ω
I = V/Z = 220/11.8 = 18.64 A

Now we increases Inductance (L) form 0.02 H to 0.04 H,
V=220, R= 10 Ω, L=0.04 H, f=50Hz.
XL = 2πfL= 2 x 3.1415 x 50 x 0.04 = 12.56 Ω
Z = √ (R2+XL2) = √ (102 + 12.562) = 16.05 Ω
I = V/Z = 220 / 16.05 = 13.70 A


We can see that, When inductance (L) was 0.02, then circuit current were 18.64 A,

But, when Circuit inductance increased from 0.02H to 0.04 H, then current decreased from13.70 A to 18.64A.

Hence proved,
In inductive circuit, when inductive reactance XL increases, the circuit current decreases, and Vice Virsa.

Show More

Electrical Technology

All about Electrical & Electronics Engineering & Technology. Follow , Twitter , Instagram, Pinterest, YouTube, & Linkedin to get the latest updates or subscribe Here to get latest Engineering Articles in your mailbox.


    1. Electrical Technology says:

      Welcome Dear

  1. Aamir agwan says:

    bhut achhe yaar……….<br />mujhe ak aue baat puchhni hai aapse mera no.9772141132<br />apko waqt mile to jaroor misscall dijeeyega

    1. Electrical Technology says:

      Thanks Dear


    thank u for valuable informatin.
    my query is,
    why we dnt use below 50 Hz in e-machines?
    Pls give answer.

Leave a Reply

Your email address will not be published. Required fields are marked *

Back to top button

Adblock Detected

Please consider supporting us by disabling your ad blocker