शैथिल्य लूप (hysteresis loop) का क्षेत्रफल व्यक्त करता है- (A) पदार्थ की चुम्बकीय ऊर्जा (B) पदार...

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शैथिल्य लूप (hysteresis loop) का क्षेत्रफल व्यक्त करता है-
(A) पदार्थ की चुम्बकीय ऊर्जा
(B) पदार्थ की ऊर्जा की हानि
(C) प्रति चक्र एकांक आयतन में ऊर्जा हानि
(D) इनमें से कोई नहीं
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