Faraday’s Law Derivation
The derivation of Faraday’s Law is explained below:
Now we take a magnet approaching a coil and consider instances at times T1 and T2
At time T1 flux linked with the coil = NΦ1
At time T2 flux linked with the coil = NΦ2
Change in flux = N(Φ2 – Φ1)
Rate of change of flux = N(Φ2 – Φ1) / t
Taking the derivative of the above equation, we get
Derivative of Rate of Change of Flux = N dΦ/dt
Faraday’s second law of electromagnetic induction, says that the induced emf in a coil is equal to the rate of change of flux associated with the coil. Thus,
E = – N dΦ/dt…(1)
The negative sign is added as it helps to accommodate Lenz’s law.
Change in Electromagnetic Force
Electromagnetic Force linked with the coil can easily be changed by following the steps discussed below.
- Induced EMF can easily be increased by increasing the number of turns in the coil.
- If the magnetic field strength increases induced EMF also increases
Faraday’s Laws of Electromagnetic Induction
Faraday’s Law of Electromagnetic Induction is the basic law of electromagnetism that is used to explain the working of various equipment that includes an electric motor, electric generator, etc. Faraday’s law was given by an English scientist Michael Faraday in 1831. According to Faraday’s Law of Electromagnetic Induction, the induced current in the circuit is directly proportional to the rate of change of Magnetic Flux.
Let’s learn about Faraday’s Law of Electromagnetic Induction, its experiment, derivation, examples, and others in detail in this article.