Hello friends of steemit!, this time I share an experimental demonstration made in my laboratory of Faraday's law, about electromagnetic induction.
Brief review of Faraday's law
For this demonstration I will use the Transformer, which is one of the most popular devices based on this principle.
The increase or decrease of the voltage, according to the requirement, have been possible thanks to the transformers, which have been a key piece in the advancement of new technology. . Most electrical equipment operates thanks to the creation of this device.
The importance of the principle of electromagnetic induction and the creation of the transformer has been remarkable and it is thanks to this that it has been possible to transmit power from power plants to large cities, industries and our homes.
The use of our laptops, televisions, tablets, cell phones and endless technologies, we owe to this invention.
Experimental demonstration of Faraday's Law
Equipment and accessories used (Figure1):
- Oscilloscope
- Tester
- Power AC
- Coils
- Iron core
- Wired
- Probe
In the images taken in the laboratory, the coils selected as primary and secondary are observed, in this demonstration Np = 400 and Ns = 800 (Figure 2).
The voltage applied in the primary as observed in the multimeter is Vp = 6,129 V (Figure 3).
Of the expression
This result shows a voltage booster transformer given that Ns> Np.
The Voltage measured in the secondary by the multimeter Vs = 10,617 V (Figure 4).
The ALTERNATE signal on the secondary coil is displayed on the oscilloscope (Figure 5).
Error% = 100x (theoretical value - experimental value) / theoretical value
Error% = 13.4%
The difference observed between the theoretical value and the measured value is due to the losses in the copper of the coils, the parasitic currents and the hysteresis cycles that are not considered in the theoretical model.
It is important to highlight that the results that are shown in this laboratory experience are obtained with state-of-the-art equipment and high technology with which, by the time of 1831, Faraday did not count for its verification.
The works of Faraday and other great scientists show a clear relationship between magnetism and electricity laying the foundations of electromagnetism, in which later great scientists such as James Clerk Maxwell supported for the formulation of their laws.
I hope that this experiment has given you knowledge about the subject. If you have any questions, please leave your comment and then I will gladly try to clarify them.
An excellent day for everyone.