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Does it matter if the resistor is before or after the capacitor?
An-L-pad before the capacitor will maintain roll-off slope and cross-over frequency the same. If the cross-over has other components, e. g. an inductor going from behind the capacitor to ground, it does matter, where you put the resistor. Although there is no general rule, which is best.
Does it matter where I put the resistor?
Resistors are blind to the polarity in a circuit. Thus, you don’t have to worry about installing them backwards. Current can pass equally through a resistor in either direction. The resistance value is typically written next to the resistor symbol.
Where do you put a resistor?
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.
When does the resistor come first does the current equal the current?
If the resistor comes first, then KCL says that the current out of the resistor must equal the current into the LED. No, the current is not smaller before the resistor than behind it. If that were the case, electrons would accumulate at one end of the resistor and soon block the current.
Do you need a resistor before or after a led?
Now you confirmed that a resistor anywhere in that circuit will slowdown the electron speed through the LED. If you are putting several (say 14) LED’s that are all the same and are rated for 3 volts, all in parallel on a circuit with a 3 volt power supply, do you need to add any resistors?
What happens if there is no resistor on the cathode?
Oyvind as per my query is this what prevents the diode from burning up as the cathode, (electron side) is connected directly to the battery negative side without a resistor. Now you confirmed that a resistor anywhere in that circuit will slowdown the electron speed through the LED.
Can you connect an ammeter before or after a resistor?
You can connect it after the resistor or before the resistor ,the value in the ammeter will be same because the resistor wont affect the current flow in a series condition. So you can connect the ammeter in any way.