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CBSE Class 12-science Answered

A pure inductor of 25 mili Henry is connected to source of 220 volt Find inductive resistor and Irms if frequency is 50 Hz?
Asked by Anshul | 06 Aug, 2017, 09:49: AM
answered-by-expert Expert Answer
The following simple steps will lead you to resolve this query:
 
1) The resistance of the inductive coil is its inductive reactance which is given by the formula XL = 2πfL.
 
2) Substitute the values of f and L to get XL. You should get the answer as 7.85 Ω
 
3) Calculate peak current through the inductor using the formula I0 = V/XL = 28 A
 
4) Now, finally calculate the rms current as Irms = I0/√2 = 19.8 A
Answered by Romal Bhansali | 07 Aug, 2017, 11:50: AM

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