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170 A wire of fixed length is wound on a solenoid of length l and radius r. Its self inductance is found to be L. Now if same wire is wound on a solenoid of length l/2 and radius r/2,then self inductance will be 1- 2L 2- L/2 3- 3L 4- 4L |
| Answer» 170 A wire of fixed length is wound on a solenoid of length l and radius r. Its self inductance is found to be L. Now if same wire is wound on a solenoid of length l/2 and radius r/2,then self inductance will be 1- 2L 2- L/2 3- 3L 4- 4L | |