His concept of induction looks at the way changing magnetic fields can cause the current to flow in wires. Any change in the magnetic environment of a coil wire will cause a voltage to be induced in the coil. No matter how much is changed, a voltage will be generated. Faraday’s first set up of his lab did not induce current. He was able to hypothesize that a changing magnetic field was necessary to induce a current in a nearby circuit. He found the changes in the magnetic field and the size of the field were related to the amount of current created, which is also known as magnetic flux. The magnetic flux is the value that is the strength of the magnetic field multiplied by the surface area of the device. Michael Faraday was able to formulate the equation: E=dB/dt, where “E” is the value of the voltage induced, “dt” is the change in time, “dB” is the change in the magnetic flux. Basically, the amount of voltage created is equal to the change in magnetic flux divided by the change in time. The bigger the change you have in the field, the greater the amount of voltage.
In order to test his hypothesis, he made a coil by wrapping a paper cylinder with wire. He ...
... middle of paper ...
...conductor, creating a current, which will further the rearrangement. Faraday noticed that he conductor charge did not influence anything that was enclosed within. He even went as far as constructing a room that was coated with metal foil and used a electrostatic generator to create a high-voltage discharge that stroked the outside of his metal foil-coated room. Michael found no electric charge on the inside walls and had used an electroscope to prove this.
Many things were able to develop successfully due to the Faraday cage. People were able to use the cage in microwaves, where it could trap the heat used for cooking. The metal wheel of the microwave acts as a Faraday cage. Also, electronic equipment can be shielded and protected form stray electromagnetic fields by using cables that contain a conducting shell that acts as a cage. Protective suits for linemen were
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