Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Study of the Electric Response of He II at the Excitation of Second
  Sound Waves   We report an experimental investigation of the electric response of
superfluid helium. Our results confirm the presence of electric potential that
appears at the relative oscillatory motion of normal fluid and superfluid
components in helium generated by the heater. The resonance of the electric
potential was observed in the first four harmonics. A suggested method for the
detection of the electric response allows the required resonance peak to be
distinguished from spurious signals. Our results are in qualitative agreement
with the data published by previous researchers. The reasons for the
discrepancy in the measured values of the potential difference are discussed.

1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin