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| 1. |
Describe magnetic field due to solenoid. (In short) |
| Answer» \tA coil with many circular close turns of insulated copper wire (like a cylinder as shown above) is a\xa0solenoid.\tOne end of such a\xa0solenoid\xa0behaves like the\xa0north pole and the other as a south pole.\tTherefore magnetic field due to current in the solenoid is similar to a bar magnet. The fields always\xa0emerge out of the North pole and always merge into the South pole\tThe field\xa0inside\xa0the solenoid is uniform.\tThe strong magnetic field inside the solenoid is so strong that it can be used\xa0to magnetize a piece of soft iron\xa0when it is placed inside the coil. The magnet formed like this is called a\xa0Electromagnet | |