Question

Would having 2 220 ohm resistors in series be equivalent to the affect of a single 440 ohm resistor?

Answer 1

Yes. Cuase the equivalent resistance, in a series combination is
Req = R1 + R2 ...

Answer 2

The resistance is equivalent

Answer 3

Hence, here,
Req = 220 + 220 = 440 ohm
which will work

Answer 4

Thanks! And if you feed a current/voltage into the cathode of a resistor, am I to believe that no current would ever travel through the anode? (cathode = -) (anode = +)

Answer 5

But if you consider from the perspective of each resistor, they're not necessarily going to get the same treatment as the 440 resistor got.

Answer 6

They have to share the volts

Answer 7

I still haven't learned current vs. voltage.. I'll study up on them now.

Answer 8

Like if you had 5V, the 440 ohm will experience all of it, but the 220 ohm will each experience 2.5V

Answer 9

Just ohm's law - and using that to calculate acceptable current for led's and stuff.

Answer 10

I bring this up because if the resistors are expecting a certain voltage range, then there are consequences

Answer 11

hmm- interesting. I'll definitely keep that in mind.

Answer 12

I wasn't sure if you were doing a homework question or a legitimate project, that's why I bring it up

Answer 13

Are you at all familiar with arduino-ish technology's? And no, just trying to tackle these concepts both for my understanding & so I can better handle the Arduino.

Answer 14

Not really

Answer 15

Thanks a bunch for all the help @wio & @Abhilash11