A solenoid of cross sectional area 1.4 m² and n=300 turns/m carries a current of 4.0 A.It stores an energy of 3.4 J.What is the length of the solenoid? A)3.5 m B)2.3 m C)2.0 m D)3.1 m E) 2.7 m

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The Answer of A solenoid of cross sectional area 1.4 m² and n=300 turns/m carries a current of 4.0 A.It stores an energy of 3.4 J.What is the length of the solenoid? A)3.5 m B)2.3 m C)2.0 m D)3.1 m E) 2.7 m

A Solenoid of Cross Sectional Area 1