resistors

  1. V

    Heating metal with resistors

    Hi! i'm doing a experiment with thermal contact conductance with cirten configurations of materials and interstitial materials. Before proceeding to the experimental part of my project i must calculate the necessary power consumpion in order to heat up the material with sufficient rate and...
  2. V

    Heating metal via resistors

    Hi! i'm doing a experiment with thermal contact conductance with cirten configurations of materials and interstitial materials. Before proceeding to the experimental part of my project i must calculate the necessary power consumpion in order to heat up the material with sufficient rate and...
  3. S

    Are the resistors in series vs in parallel?

    1. The problem statement, all variables and given/known data A metal wire of resistance R is cut into two pieces of equal length. The two pieces are connected together side by side. What is the resistance of the two connected wires? 2. Relevant equations RSeries = R1 + R2 + ... RParallel =...
  4. M

    Resistors

    Two resistors R1 and R2 are in parallel with each other. Together they carry total current I. (a) Determine the current in each resistor. (b) Prove that this division of the total current I between the two resistors results in less power delivered to the combination than any other division. It
  5. M

    Resistors in series and in parallel

    Two resistors connected in series have an equivalent resistance of 690 ohms. When they are connected in parallel, their equivalent resistance is 150 ohms. Find the resistance of each resistor
  6. O

    resistors - series circuit. I1=I2=...

    I=Q/S, C/S=A {m.k.s} v=12v (for exam) so eletric charge will passed from the high vol to low vol. and resistors dec the volt. does it influence on the force? if yes what are the way it change it? and if yes the velocity changed so less electric charges passed trough the cut of the wire in one...
  7. M

    transformation between resistors systems

    hi, I need to find a transformation between (R1,R2,R3) and (Ra,Rb,Rc). and the oposite one for the given circuits in attached image. I used Kirchof laws for the currents in the middle of the numbered circuit, and for the three corners of alphabetised circuit. I used for the voltages also. but...
  8. J

    Determine currents in resistors

    Iv started physics electronics literacy at university as a requirement for my degree, i didnt do science at school and im very confused with whats going on..How to a determine a current in the resistors, please can someone give me a step by step on how they got to the answer...i have uploaded a...
  9. I

    Why would an engineer design a circuit with 3 resistors in parallel?

    Why would an engineer design a circuit with 3 resistors in parallel as opposed to just using one resistor with 1/3 the resistance?