Intrinsic impedance of copper at high frequencies is—

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Intrinsic impedance of copper at high frequencies is—

1. Purely resistive
2. Purely inductive
3. Complex with capacitive component
4. Complex with an inductive component

Correct Option: D

Intrinsic impedance of metal σ >> ωε, we have

η =	√	jωμ
		σ + jωμ

≅	√	jωμ	=	ωμ	∠45º
		σ		σ