Question

Part III: Finding μ₀, the Permeability of Free Space

Step 1: As a test of the setup, data were collected for the B-field strength at five positions along the Slinky. Measurements were made inside the Slinky and outside and above the Slinky. This data appears in Table 2. The positions are measured from the left end of the Slinky.

Position (cm)	B-field inside (mT)	B-field outside (mT)
20	0.00358	-0.00049
50	0.004	-0.00088
100	0.00386	-0.00053
150	0.00437	-0.00028
180	0.00407	-0.00057

Table 2: Data collected for B-field strength along the length of the Slinky.

Question: Referring to these data, discuss whether the Slinky acts as an ideal solenoid. In your answer address the change in the sign of the field. Provide reasons as to why it might be less than ideal.

Answer 1

the on & In an ideal solenoid, the radius of the Coil in solenoid must be negligible as compared to the ided solenoid the magnete field is completely produced inside length of the solenoid for an the solenoid And outside the solenoid it must be zero, And magnetic field inside the solenoid must be And Magnetic field created by Slinky ip's similar on a Solenoid, it can be taken as an example But here in the Dalat proseicted by the table the can be seen that magnetic field Debte olie esmall ove zuro. And, Magnetic field Inside & fog changes with the length. i. can say that the slinky having above alata Ps not be considered as ideal solenoid, to that g Solenad. but not we an As the length of the solenoid increases, the cotume Ontride # must also increases, & Density of magnetic field line outside will be resduced amount. And Magnetic field become zero at loye diston by e greater Change the field indicated that the an in opposic drea", because there is not no significance of ove field. tod