Contents
What does equivalent resistance mean?
The equivalent resistance is defined as a common point or node where the total resistance is measured in a series or parallel arrangement (in either the whole circuit or in a fraction of the circuit). The equivalent resistance or multiple resistors is defined between two terminals or nodes of the electrical network.
What is equivalent resistance class 12?
The equivalent resistance of a network is the single resistor which can replace the entire network in such a way that for a certain applied voltage as V we will get the same current as I.
What is the equivalent resistance of a parallel circuit?
The equivalent resistance of a parallel circuit is found by the general equation Req = 1 / ( 1/R1 + 1/R2 + 1/Rn) The total power consumed in a parallel circuit is equal to the sum of the power consumed by the individual resistors.
How do you calculate resistance in a circuit?
It is defined as the resistance in a circuit with a current of 1 ampere at 1 volt. Resistance can be calculated using Ohm’s law, which states that resistance equals voltage divided by current, or R = V/I (more commonly written as V = IR), where R is resistance, V is voltage and I is current.
How do you calculate parallel resistance?
When you are calculating the total resistance of a parallel circuit you take each individual resistance and divide it into (not by) one. You then add up all the resistances that were divided into one and divide that sum into one. The formula looks like this for the diagram at the top of the article. 1÷Rt (total resistance)= 1÷R1 + 1÷R2 + 1÷R3.
What does effective resistance mean?
Effective resistance is defined as the resistance to an alternating current, expressed as the ratio of the power dissipated to the square of the effective current. Effective resistance varies with the frequency of the signal. For passive devices such as resistors, the effective resistance is always a constant.