These original Kirt's Cogitations™ may be reproduced (no more than
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Cog·i·ta·tion [koj-i-tey'-shun] – noun: Concerted thought or
reflection; meditation; contemplation.
Kirt [kert] – proper noun: RF Cafe webmaster.
The Origin of "I"
Here's an assignment for engineering new grads and technicians.
Go ask your favorite engineer why the letter "I" is used as a symbol for current. Don't give him (or her) too much
grief for not knowing - the vast majority of engineers I asked didn't know.
The answer: Intensity, since
current was originally thought of as being how intense or concentrated the electron flow is in a circuit.