What is the current through resistor 2 in a series circuit?

  • Thread starter Thread starter alan1592
  • Start date Start date
  • Tags Tags
    Circuits Series
AI Thread Summary
In a series circuit with three resistors of 3.0 ohms each powered by a 3.0 V battery, the current through each resistor is calculated using Ohm's law. The total resistance is 9.0 ohms, not 3.0 ohms, leading to a current of 0.33 A. It is emphasized that current is measured in Amps, not Ohms. Participants confirm that the current remains the same through all resistors in a series circuit. The user is advised to create a new thread for additional questions or continue asking in the current thread.
alan1592
Messages
8
Reaction score
0

Homework Statement


First problem is a series circuit with 3 resistors. R1,R2,R3 is 3.0 ohms. This is all powered by a 3.0 V battery.

What is the current threw resistor 2?


Homework Equations


V=IR


The Attempt at a Solution



3.0=I(3.0)

Divide both sides by 3.0 and I got 1
.. the correct answer is 0.33 OHMs
 
Physics news on Phys.org
First of all, the units of current are Amps. I also believe that you misread the question. The total resistance is not 3ohms, instead EACH resistor has a resistance of 3 ohms. So you need to find the equivalent series resistance first, and then apply ohm's law and get the correct answer of 0.33A.
 
erm. . . check your solutions, current is not measured in Ohms.

First, find equivalent resistance, and remember that current thru a series of resistors is the same.
 
Ok I got the right answer. I got the total resistance and divide it by the volts and i got the current. Thanks guys! What if I have another question on this same sort of problem do i make another thread? Or should i just ask here?
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
Thread 'Trying to understand the logic behind adding vectors with an angle between them'
My initial calculation was to subtract V1 from V2 to show that from the perspective of the second aircraft the first one is -300km/h. So i checked with ChatGPT and it said I cant just subtract them because I have an angle between them. So I dont understand the reasoning of it. Like why should a velocity be dependent on an angle? I was thinking about how it would look like if the planes where parallel to each other, and then how it look like if one is turning away and I dont see it. Since...
Thread 'Correct statement about a reservoir with an outlet pipe'
The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
Back
Top