1 15cm Compty toroid) is 88mm², dnd 1800 turns with current of 16A A torgid with radius A cross section aren Zird trell insid faroid. an 4 the torsind filled with Find megnetiza fara ingbetic muterial the mutenial g ngsetiz augreptibility of ool g neghetic 0.0- tizution C. Find the percentlge Aas the gnetie field chonged ofter fll the toroid with poramagnesil muterial)
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