When subjected to alternating stresses, an insulating material is char – McqOptions

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1.	When subjected to alternating stresses, an insulating material is characterised by complex dielectric constant ∈'r - j∈"r . In such materials, the dielectric losses under alternating stress is proportional
A.	∈"r
B.	both ∈'r and ∈"r
C.	∈'r
D.	(∈"r)2
Answer» B. both ∈'r and ∈"r

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