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resistor id? Answered

this might sound stupid, but being brand new to electronics i need to pose this question, i found a scematic with 3 resistors on, 1 is a variable rated as R1 100K, the second R2 1K, the third R3 270R, the problem is the third resistor, what does the "R" stand for?



8 years ago

I had the same problem. Thanks for explaining it!!

The "R" labels the component as a resistor, the numbers identify which resistors they are in the schematic.


so i get back to my answer does that mean then that it is a 2.7k resistor ?

Sorry, end of the line - I missed that R. Seems to have been answered already though.


the r means it is only 270

The R is used in place of the decimal point in the same way that K or M are used. It's just that for low values they use R so
4R7 is 4.7 ohms
4K7 is 4700 ohms
4M7 is 4,700,000 ohms.

Yours is 270R = 270 ohms.

so if i understand correctly R3 270R means a 2.7K resistor

the r is just "resistance" or somthing!!! it dosent mean mutch it is just another way of writing ohms!!! so a 330r resistor is a 330 ohm resistor!!! cm