Easy tips

Do resistors go both ways?

Do resistors go both ways?

No the resistors are bidirectional and can therefore be used in both directions. Do not go wrong with the colored lines, it’s just to say the approximate resistance. The resistors are purely passive components and have a linear response when the voltage is applied to one or the other polarity.

Does it matter which way you place a resistor in a printed circuit board?

Surface-mount passive components such as resistors, capacitors, and inductors, should be aligned perpendicular to the direction of the board going through the wave so that both pins get soldered equally.

Which side do you put the resistor on?

Since this resistor is only being used to limit current through the circuit, it can actually be located on either side of the LED. Placing the resistor on the positive (anode) side of the resistor will have no differing effects from placing the resistor on the negative (cathode) side of the LED.

What would change if you reversed the order of the resistors?

It’ll simply flow in the opposite direction as nothing inside the pipe network has been altered. Hope this helps. Please do comment for any queries. No current will flow through a resistor when the voltage across the resistor is 0V — or to put it another way, when the potential at each end of the resistor is the same.

Do resistors reduce current or voltage?

In short: Resistors limit the flow of electrons, reducing current. Voltage comes about by the potential energy difference across the resistor.

Does a resistor have a positive and negative side?

Resistors do not have positive or negative terminals. However, when current flows through a resistor then the voltage drop across the resistor do have a polarity.

What is the loop rule?

Kirchhoff’s loop rule states that the algebraic sum of potential differences, including voltage supplied by the voltage sources and resistive elements, in any loop must be equal to zero.

Can you put a resistor in a circuit backwards?

There is no backwards. I think this applies perfectly to the definition of the resistor as a circuit element and should therefore be the accepted answer. However, the comment by @RussellMcMahan brings up the point that it may “matter” during an optical inspection process (visual or machine-based) as part of circuit board assembly.

Where is the resistor in the flow direction?

In the same diagram from sparkfun, the resistor is located “before” the LED in terms of the flow direction, accepting that the flow is from positive to negative, which is must be due to the polarity of the resistor and LED. Logically, this makes sense to me, since the resistor is needed to reduce current going into the LED.

Is it true that resistors work both ways?

Yes, resistors work both ways. The gold/yellow stripe only is relevate to the tolerance. XOIIO (18120)“Great Answer” (6) Flag as… ¶. Resistance is resistance is resistance. Everything in a circuit provides a little bit of “ohms” for the poor.

Why does a resistor not have a polarity?

Depending on what other circuit components are out there, other aspects of the circuit might change when you re-order things, but for a simple series circuit it doesn’t matter. And by itself, a resistor does not have a polarity. And by itself, a resistor doesn’t not have a polarity. Click to expand… But the LED does.

In the same diagram from sparkfun, the resistor is located “before” the LED in terms of the flow direction, accepting that the flow is from positive to negative, which is must be due to the polarity of the resistor and LED. Logically, this makes sense to me, since the resistor is needed to reduce current going into the LED.

Yes, resistors work both ways. The gold/yellow stripe only is relevate to the tolerance. XOIIO (18120)“Great Answer” (6) Flag as… ¶. Resistance is resistance is resistance. Everything in a circuit provides a little bit of “ohms” for the poor.

There is no backwards. I think this applies perfectly to the definition of the resistor as a circuit element and should therefore be the accepted answer. However, the comment by @RussellMcMahan brings up the point that it may “matter” during an optical inspection process (visual or machine-based) as part of circuit board assembly.

Can a resistor be inserted into a polarized circuit?

As some other persons said in their answers, a resistor is not a polarized device. There is no “+” or “-” orientation. You can insert a resistor into a circuit without worrying about which end of the resistor is which. Thanks for contributing an answer to Electrical Engineering Stack Exchange! Please be sure to answer the question.

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Ruth Doyle