# Series connected capacitor and resistor [closed]

I want to ask something that I see in the circuit. As follows,

What is the purpose of using 2R resistor in this circuit?

• Replaced comment with answer below. – Nedd Jan 12 '18 at 6:17
• Add whole circuit to your question, please. Not just a small section. – Chupacabras Jan 12 '18 at 6:34
• Your question is unclear. Are asking what is purpose of resistor in this RC circuit? Or are you asking what is the meaning of "2R" value? – Chupacabras Jan 12 '18 at 6:36

It is simple RC circuit. The resistor slows down charging of the capacitor.

• But 2R is too small, is not it? – Onur Bayrak Jan 12 '18 at 6:26
• @OnurBayrak That is another question! You have asked what is purpose of that resistor, haven't you? – Chupacabras Jan 12 '18 at 6:33
• Yes, I said that – Onur Bayrak Jan 12 '18 at 6:42
• @OnurBayrak Then my answer is exactly about that. – Chupacabras Jan 12 '18 at 7:01

Typically the marking of 2R for that resistor would tell you that the value of that resistor should be 2 times the value of a similar (or referenced) resistor marked only as R somewhere else in the circuit.

• OK, two ways of looking at this. Did you want to know what is the purpose of the using the designation "2R" ? Or were you asking what is the function of the resistor marked as 2R? – Nedd Jan 12 '18 at 6:27
• What is the function of the resistor marked as 2R? – Onur Bayrak Jan 12 '18 at 6:44
• OK, so the answer from Chupacabras is more fitting. But from your other comment don't assume 2R means 2 Ohms. – Nedd Jan 12 '18 at 7:35
• I have never seen that as a convention, typically in the circuits I have seen, 2R would be a 2 ohm resistor, similar 2K would be 2000 ohms and 2M would be 2000000 ohms. – Colin Jan 12 '18 at 9:34