Simple circuit, find equivalent resistance seen by the source

In summary, the conversation discusses finding the equivalent resistance for a circuit and determining the power delivered by a source. The circuit diagram is provided and the necessary equations are listed. The conversation concludes with the correct values for the equivalent resistance and power being delivered by the source.
  • #1
qpham26
56
0

Homework Statement


For the circuit shown in Figure, find the
equivalent resistance seen by the source. How much
power is delivered by the source?

http://sphotos-b.xx.fbcdn.net/hphotos-snc7/304377_496325960386924_988412599_n.jpg

Homework Equations


Req = R1R2 / R1+ R2

P = V^2 / R

Thanks you for your time.

The Attempt at a Solution


I am not understanding what they meant by "seem by the source"
so I assume that they want to find R equivalent for the whole thing.

Start from the right to left
2Ω + 1Ω = Req1 = 3Ω
Req1 || 3Ω = Req2 = 1.5Ω
4Ω + 1.5Ω+5Ω || 6Ω = Req3 = 3.82Ω
---->ReqS = 3.82Ω + 7Ω = 10.82Ω
---->Ps = Vs2/ ReqS = 18.11 W
 
Last edited by a moderator:
Physics news on Phys.org
  • #2
am not understanding what they meant by "seem by the source"
so I assume that they want to find R equivalent for the whole thing
.

Yes that is correct.

Imagine you were physically standing on the symbol for the 14V source voltage. What equivalent resistance do you "see" if looking to the right.

Your answers for the resistance and power are correct.
 

1. What is a simple circuit?

A simple circuit is a basic electrical circuit that consists of a power source, a load (such as a light bulb), and connecting wires that allow the flow of electrical current.

2. What is equivalent resistance in a circuit?

Equivalent resistance, or total resistance, is the combined resistance of all components in a circuit when viewed from the perspective of the power source. It is measured in ohms (Ω).

3. How do you calculate equivalent resistance in a simple circuit?

To calculate the equivalent resistance in a simple circuit, you can use the formula R = R1 + R2 + ... + Rn, where R1, R2, etc. are the individual resistances of each component in the circuit.

4. Why is finding equivalent resistance important?

Finding equivalent resistance allows us to determine the total resistance in a circuit, which is necessary for calculating the flow of electrical current and ensuring the proper functioning of the circuit.

5. What factors affect the equivalent resistance in a circuit?

The equivalent resistance in a circuit is affected by the number and type of components, the arrangement of the components, and the properties of the conducting material, such as resistance and conductivity.

Similar threads

How to find the equivalent resistance of this electric circuit?
    • Engineering and Comp Sci Homework Help
Replies
5
Views
3K
Engineering Norton/Thevenin Equivalent circuits with a dependent voltage source
    • Engineering and Comp Sci Homework Help
Replies
9
Views
4K
Engineering How do I find the Thevenin Equivalent of this circuit?
    • Engineering and Comp Sci Homework Help
Replies
10
Views
2K
I finding the Thevenin equivalent resistance
    • Engineering and Comp Sci Homework Help
Replies
6
Views
2K
Engineering Find the Thevenin Equivalent circuit
    • Engineering and Comp Sci Homework Help
2
Replies
35
Views
4K
Engineering Find the equivalent resistance of this circuit w/o Data?
    • Engineering and Comp Sci Homework Help
Replies
14
Views
2K
Engineering Circuit (equivalent resistance)
    • Engineering and Comp Sci Homework Help
Replies
5
Views
1K
Engineering Find the equivalent Resistance of the circuit
    • Engineering and Comp Sci Homework Help
Replies
14
Views
5K
Find the equivalent resistance of this circuit
    • Introductory Physics Homework Help
Replies
28
Views
1K
How to find the equivalent resistance of this infinite circuit?
    • Introductory Physics Homework Help
Replies
7
Views
730

Hot Threads

Recent Insights

Back
Top