Day 22 Solenoids

Solenoids:

This experiment we use plastic tube and wrapped wire to attach the power supply with a coil.

Begin with 1 loop and increase 1 loop at once till 5 loops.

We set magnetic field sensor inside the tube to make sure sensor is below( we didn't do above) the center of coil. 

Result below:

As the result, we can see the ratio of the magnetic field is decrease as loop increase, and it drop till 3.5*10^-5 T/A.

By using this value we can calculated the length of wire by formula below (Solenoid)

Magnet in Motion:

We connect this large coil to ammeter to induce current. We discover the relationship below

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Extra Credit

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