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FizixFreak
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why is current always same for series resistances i mean if a current passes through a resistor a then same current will pass through resistor b does the first resistor not reduces current
FizixFreak said:why is current always same for series resistances i mean if a current passes through a resistor a then same current will pass through resistor b does the first resistor not reduces current
berkeman said:Current is continuous through a loop conductor (at least for a DC current or an AC current where the loop size is much smaller than a wavelength). Think of it as beeds on a string being pulled/pushed through a pipe...
FizixFreak said:why is current always same for series resistances i mean if a current passes through a resistor a then same current will pass through resistor b does the first resistor not reduces current
Studiot said:I think this is a perfectly reasonable query for a beginner to make.
This is where the hydraulic analogy is appropriate (please don't spoil this thread with discussion other failings of this analogy)
Imagine that your series resistors are like pipes, one after the other.
If you keep pumping water into one end it has to come out of the other or burst the pipes. Of course the longer the pipes the harder you have to pump to push the water through.
Resistors are like this, if you push current into one end it has to come out of the other.
Of course the is something which is lost in passing the resistor. This is the voltage. The greater the resistance the greater the voltage loss.
Studiot said:I deliberately didn't mention the pipe diameter, I said longer.
But yes a smaller diameter pipe offers greater resistance to flow than a larger one so you have to pump harder to push the flow through.
Buckethead had a slightly different interpretation of you post and thinking about it he might have been right.
I though you meant putting one resistor after another (hence my comment about pipes).
This is called a series circuit and since there is only one path available all the current that flows into the first resistor , flows out and into the second one and so on, like water in the pipes.
Alternatively if you meant that you have one resistor connected to a supply (battey etc) and you change it for a different one will you get a different current, the answer is yes. The battery voltage will not change (within reason) but the current depends upon the total resistance seen by the battery.
russ_watters said:Yes.
FizixFreak said:how do the resistors decrease the potential of the charges in a current loop i mean hoe do these resistors work?
Current electricity is the flow of electric charge in a circuit. It is caused by the movement of electrons through a conductive material, such as a wire.
Current passes through resistors because resistors are designed to impede the flow of electrons, causing them to slow down and create a voltage drop. This resistance is necessary for proper functioning of a circuit.
The amount of current that passes through a resistor is directly proportional to its resistance. This means that as the resistance increases, the current decreases, and vice versa.
The amount of current that passes through a resistor is affected by its resistance, the voltage of the circuit, and the type of material the resistor is made of. Temperature can also play a role in the resistance of a material, which can affect the current.
Yes, resistors can be used to control the amount of current in a circuit. By adjusting the resistance, you can change the amount of current that flows through a specific part of the circuit, helping to regulate the overall flow of electricity.