Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self Magnetic Field and Current-loop of Electron with Five Different
  Radii and Intrinsic Properties   With the rotation of charge in a circular path current-loop is generated.
This results in the production of magnetic fields in a charged body. This self
(internal) magnetic field is treated here with five different radii of
electron. Closed loop line integral of magnetic induction vector or the
integral form of the Ampere's circuital law is expressed in terms intrinsic
properties of electron.

6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math