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Physics

Module 3: Waves and Thermodynamics

The Magnetic Field Produced by Wires and Solenoids

How are the magnetic fields produced by wires and solenoids?

In this post, we conduct investigations into and describe quantitatively the magnetic fields produced by wires and solenoids, as a part of the Prelim Physics course under the module Electricity and Magnetism and sub-part Magnetism. The relationships that are investigated are:

  • B = \frac{ \mu _{0} I}{2 \pi r}
  • B = \frac{ \mu _{0} N I}{L}

The following two videos explain how magnetic fields are created by wires and solenoids.

Part 1: Magnetic field created by a current-carrying wire

 

Part 2: Magnetic field through solenoids