A primary source is data you have gathered yourself, personally, i.e. standing in the street asking people.
A secondary source is data from someone else or another resource.
secondary means you were there and saw the info primary mean you have heard it from somewhere else
A secondary source has the benefit of hindsight.
That means that there is a primary source of energy, and the secondary one is used incase the other fails.
Primary source: A historical document written by an eyewitness; secondary source: a historical document interpreting the accounts of eyewitnesses
600 volts I'd like to point out that your question is asking for the secondary voltage, which is usually lower than the primary, where there are more windings on the secondary than primary - Thus your secondary is higher voltage than your primary. I would say the question should be worded differently so the primary has 500 windings, and the secondary has 100 windings.
is pericles primary source or secondary source
It is a primary source.
No, an encyclopedia is a secondary source.
it is a primary source
It is a secondary source.
Secondary source
secondary
Primary
Primary Source
# Primary # secondary # secondary # secondary # primary
A picture can indeed be a primary source.
secondary