Electromagnetism is a branch of physics that deals with the magnetic field developed around the current carrying conductor or moving charge. To find the magnitude of the magnetic field induction, we can use Biot-Servert's law and ampere's law. We can define the fundamental unit to measure the current ampere basing on this definitions. We can also measure force between two straight conductors. As mentioned in the posts in the relevant topics, we can find magnetic induction for different kind of current carrying conductors using these rules.
If a current carrying conductor is placed under the magnetic field, it experience two magnetic fields and because of them, there is torque experienced by the current carrying conductor and we can design moving coil galvanometer basing on this concept. It can be even converted into Ammeter and voltmeter. All these are discussed in detail in the following posts.
Related Posts
Other complete lessons in this blog are mentioned here for the reference.
Mechanical Properties of Matter
Heat and Thermodynamics
Waves and Oscillations
Ray Optics
Mechanical Property of Solids Elasticity Complete Lesson
Waves and Oscillations
Ray Optics
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