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| 1. |
A coil is wound having a diameter . Its inductance is 10 mH. If it is rewound on the same core with a wire having diameter 0.5 and total weight of the wire is the same as before, the inductance will be |
| Answer» Since diameter is halved, area of cross-section is one-fourth. The number of turns becomes four times. Inductance = μ N2. | |