Why is Current Same in Series Resistor Circuit?

  • Thread starter Thread starter soft land
  • Start date Start date
  • Tags Tags
    Current Series
AI Thread Summary
In a series resistor circuit, the current remains constant because the total resistance increases, which adjusts the current output from the voltage source according to Ohm's Law. When additional resistors are added in series, the voltage source compensates for the increased resistance by altering the current supplied to the circuit. The concept of conservation of energy is key, as the current, or flow of electrons, must pass through each resistor, resulting in a voltage drop across them. This drop represents the energy lost due to resistance, but does not change the overall current flowing through the circuit. Thus, while resistance opposes current flow, it does not affect the uniformity of current in a series configuration.
soft land
Messages
2
Reaction score
0
resistance is oppsition to the flow of current then why the current is same in series resistive ciruit..??
 
Engineering news on Phys.org
Any complex circuit can be simplified, this being the case -- what does current see entering a circuit?
 
Remove or add a load and you will see that the current value changes.
 
soft land, if you have a voltage source connected to one resistance, what will happen is that the voltage source will look through it's terminals finds the amount of resistance connected to it and figure out who much current it can give to the circuit by applying ohm's law and then outputs that current. now if you connect two resistances in series the voltage source will again look at it's terminal only this time to find that the resistance have increased thus adjusting the current given to the circuit.

Also another way to look at it is that the current is a given quantity of electrons flowing through the resistance. when the current passes through the resistance or "opposition" it slows down but it must pass -where else would it go- this slow-down is simply the voltage drop across the resistance.
 
Very basic question. Consider a 3-terminal device with terminals say A,B,C. Kirchhoff Current Law (KCL) and Kirchhoff Voltage Law (KVL) establish two relationships between the 3 currents entering the terminals and the 3 terminal's voltage pairs respectively. So we have 2 equations in 6 unknowns. To proceed further we need two more (independent) equations in order to solve the circuit the 3-terminal device is connected to (basically one treats such a device as an unbalanced two-port...
suppose you have two capacitors with a 0.1 Farad value and 12 VDC rating. label these as A and B. label the terminals of each as 1 and 2. you also have a voltmeter with a 40 volt linear range for DC. you also have a 9 volt DC power supply fed by mains. you charge each capacitor to 9 volts with terminal 1 being - (negative) and terminal 2 being + (positive). you connect the voltmeter to terminal A2 and to terminal B1. does it read any voltage? can - of one capacitor discharge + of the...
Back
Top