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The number of turns per unit length of a long solenoid is 10. If the average radius is 5cm and it carries a current of 10A, then the ratio of flux densities obtained at the centre and at the end on the axis will be |
| Answer» The number of turns per unit length of a long solenoid is 10. If the average radius is 5cm and it carries a current of 10A, then the ratio of flux densities obtained at the centre and at the end on the axis will be | |