You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "what does a ferrite core do on a cable?" whose answer is suppresses high frequency noise.
Each document should contain about 30 words, and these documents should contain useful information.

Query: what does a ferrite core do on a cable
Useful Output:

Doc 1: Adding ferrite core, and especially making few turns around core will increase inductance significantly compared to wire without ferrite core.
Doc 2:  could help if you believe RF may be a pretty intense problem. You can also try a different USB cable and even buy a more shielded cable.
Doc 3: Very useful info! We are the split core ferrite manufacturer that produce all of those snap-on ferrite filters! Maybe we have chance to work
Doc 4: In such cases, cables often become effective antennas, and ferrite cores are generally used to locate and suppress the noise (at least during
Doc 5: The purpose of the core is to guide the magnetic flux through the core instead of through the air. The core has a high magnetic permeability,