How do you find the equivalent resistance of a circuit?
Solution
- The equivalent resistance is the algebraic sum of the resistances (Equation 10.3.
- 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 find the equivalent resistance in a parallel circuit?
The voltage across each resistor in parallel is the same. The total resistance of a set of resistors in parallel is found by adding up the reciprocals of the resistance values, and then taking the reciprocal of the total: equivalent resistance of resistors in parallel: 1 / R = 1 / R1 + 1 / R2 + 1 / R3 +…
How do you find the equivalent resistance of a Wheatstone bridge?
Firstly, combine the series resistances and form the ideal circuit of a Wheatstone bridge. Just keep in mind no current will flow through the central resistance. Then apply the formula and find the answer. 1R=1R1+1R2 when in parallel.
How do you find the equivalent resistance of a Class 10?
The equivalent resistance of a number of resistors connected in parallel can be computed using the reciprocal of the resistance i.e. \frac{1} {R}. The reciprocal of the equivalent resistance will be equal to the sum of the reciprocals of each resistance.
What is equivalent resistance BW A and B?
So the potentials across all the resistors can be shown as in the figure below. Thus, the equivalent resistance of the given combination of the resistors between A and B is equal to $\dfrac{{5R}}{8}$. Hence, the correct answer is option B.
Is equivalent resistance the same as total resistance?
Equivalent resistance is a different way of indicating ‘total’ resistance, which we calculate differently for series and parallel circuits. When calculating total resistance in a parallel circuit, we add the reciprocals of the resistances found in each branch.
What is equivalent resistance in parallel?
If the two resistances or impedances in parallel are equal and of the same value, then the total or equivalent resistance, RT is equal to half the value of one resistor. That is equal to R/2 and for three equal resistors in parallel, R/3, etc. Conductance is the reciprocal or the inverse of resistance, ( G = 1/R ).
How do you solve combined parallel and series circuits?
REVIEW:
- To analyze a series-parallel combination circuit, follow these steps:
- Reduce the original circuit to a single equivalent resistor, re-drawing the circuit in each step of reduction as simple series and simple parallel parts are reduced to single, equivalent resistors.
- Solve for total resistance.