Variation of magnetic field with the distance along the axis of a current carrying coil and estimate the radius of the coil
1. What does 'dl' represent in the context of Biot-Savart's Law?
2. How does the magnetic field along the axis of a current-carrying coil change with increasing distance from the coil?
3. How can the radius of a coil be estimated without direct measurement?
4. In the formula involving the magnetic field, number of turns, current, and radius of the coil, what physical quantity is used to estimate the coil's radius?
5. What other methods can be used to determine the variation of magnetic field with distance along the axis of a current carrying coil?