E12_2-24-10 - Then measure the resistance of two three and...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
E12: Equivalent resistance and power Materials: Power supply, multimeter, resistors, paper, wires, switch Initial definitions and givens: Equivalent resistor: a single resistor that can replace two or more resistors in a circuit with no change in the current supplied by the battery or power supply. Power: the rate that energy is supplied or dissipated. The energy supplied by a battery of power supply is calculated by multiplying current times voltage. The unit of power is the watt . P (in watts) = I ( in amps) times V (in volts). Power is dissipated in a resistor as heat or in a bulb as heat and light. Initial Instructions and questions: 1. The general rule for finding the equivalent resistor for a number of resistors in series is R eq = R 1 + R 2 + R 3 + ... 2. Using your multimeter, re-measure all four resistors.
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Then measure the resistance of two, three, and four resistors in series. Does the formula work? 3. The general rule for finding the equivalent resistor for a number of resistors in parallel is 1 R eq = 1 R 1 + 1 R 2 + 1 R 3 + ... 4. Using your multimeter, measure the resistance of two, three, and four resistors in parallel. Does the formula work? 5. Using your data from E11 for two resistors wired in series, calculate the power supplied by the power supply and the power dissipated in each resistor. 6. Using your data from E11 for two resistors wired in parallel, calculate the power supplied by the power supply and the power dissipated in each resistor. 7. How is the supplied power related to the power dissipated in all the resistors?...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern