How do you calculate equiv resistance?

Solution

1. The equivalent resistance is the algebraic sum of the resistances (Equation 10.3.
2. The current through the circuit is the same for each resistor in a series circuit and is equal to the applied voltage divided by the equivalent resistance: I=VRS=9V90Ω=0.1A.

How do you use symmetry in a circuit?

For symmetrical circuits, there are sometimes two branches that the current can choose, with the same current flowing in each (because of symmetry). When that happens, you can remove half the circuit, and halve the values of the resistors in the other side.

What is symmetry rule physics?

symmetry, in physics, the concept that the properties of particles such as atoms and molecules remain unchanged after being subjected to a variety of symmetry transformations or “operations.” Since the earliest days of natural philosophy (Pythagoras in the 6th century bce), symmetry has furnished insight into the laws …

What is the equivalent resistance between?

What is Equivalent Resistance? The equivalent resistance is defined as a point where the total resistance is measured in a parallel or series circuit (in either the whole circuit or in a part of the circuit). The equivalent resistance is defined between two terminals or nodes of the network.

What is equivalent resistance between A and B?

The equivalent resistance between A and B is 7.5 ohms. 3 & 6 are in parallel.

What is equivalent resistance in the above circuit?

The equivalent resistance is defined as a point where the total resistance is measured in a parallel or series circuit (in either the whole circuit or in a part of the circuit). The equivalent resistance is defined between two terminals or nodes of the network.

What is the equivalent resistance in this circuit?

What is equivalent resistance between A and B in parallel?

Hence equivalent resistance between points A and B is 22.5Ω.

How do you find the equivalent resistance?

To get the Equivalent Resistance we combine resistors in series and in parallel. Here, and are in parallel. So, the equivalent resistance is given as. Also, the and resistors are in series. Hence the equivalent resistance will be given as, After reduction, we now notice, and are in series, so the equivalent resistance.

What is equivalent resistance in a series circuit?

There is a direct relationship between the resistance of the single resistors and the total resistance of all the resistors present in the circuit. For example, when two 6-Ω resistors are connected in series, it would be equivalent to having one 12-Ω resistor in the circuit. This is the concept of equivalent resistance in a series circuit.

What is the equivalent resistance of the middle resistor in ohms?

Considering the middle line the symmetry axis this becomes: Then, you see the we have the equivalent resistance: (1 + 0.5 + 0.5) + (0.5) = 2.5 ohms. What’s the problem? If you draw it a bit different, it’s easy to see that there is no current flowing through the middle resistor.

What is the equivalent resistance of a network?

In the equivalent resistance of a network, a single resistor could substitute the complete network so that for a specific applied voltage and/or the equivalent current can be obtained similar to the one when used as a network.