Let us consider a solenoid of N turns with length l and area of cross section A. It carries a current I.

*Self inductance of a long solenoid*

Let us consider a solenoid of N turns with length *l* and area of cross section A. It carries a current I. If B is the magnetic field at any point inside the solenoid, then

Magnetic flux per turn = B × area of each turn

Hence, the total magnetic flux (φ) linked with the solenoid is given by the product of flux through each turn and the total number of turns.

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Physics : Effects of electric current : Higher Secondary(12 Std) : Self inductance of a long solenoid |

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