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    				| 1. | andA long solenoid of N turns has a self'inductancearea of cross section A. When a current i flows throughthe solenoid, the magnetic field inside it has magnitudeB. The current i is equal to:(A) BAN/L(C) BN/ALL(B) BANL(D)B/ANL | 
| Answer» L = N*(φ/I)and φ = B/A so L= NB/AI => I = BN/AL , option C. | |