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Answer Posted / dileep t
The A.C resistance is always greater than D.C resistance.
A.C resistance is about 1.62 times D.C resistance. In D.C
the frequency is zero . Hence the total impedance of a line
will be only resistive.
z=R+XL
since f=0;XL=0
Z=R.
But in A.C f is not equal to zero. Hence Z will be large as
compared with D.C
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