Why is it not possible to induce magnetism with alternating current?

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Solution

$T h e r e a s o n b e i n g f o r t h e f i r s t h a l f c y c l e o f A . C . c u r r e n t, t h e m a g n e t i z a t i o n o f t h e c o n d u c t o r w i l l t a k e p l a c e a n d f o r t h e n e x t h a l f c y c l e, t h e d i r e c t i o n o f c u r r e n t i s r e v e r s e d, a s a r e s u l t o f w h i c h d e m a g n e t i z a t i o n o f t h e c o n d u c t o r t a k e s p l a c e . S o i t d o e s n o t b e c o m e p o s s i b l e t o m a g n e t i s e a c o n d u c t o r b y a l t e r n a t i n g c u r r e n t .$

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