Connect with us

need help with calculation.

Discussion in 'General Electronics Discussion' started by needy, Sep 27, 2009.

Scroll to continue with content
  1. needy


    Aug 13, 2009
    hi guys i'm stuck on two calculations i kind of have an idea but not exactly sure and would love to find how to calculate the following

    Q1. Two resistors R1 and R2 are are parralel connected to a voltage source. If R1 has a value of 50ohms and and a current of 2.0 amps

    1 . what is the voltage across R2? = is it 100v
    2. and is the supply voltage 100v?

    Q2. A series circuit has three resistors, if the voltage across R1 is 4volts, R2 is 5volts and R3 is 6 volts

    1. The circuit voltage is 10 volts, correct?
    2. what (or how do i find) the resistance value of R2 if R1 has 2.0 amperes flowing through it?
  2. Resqueline


    Jul 31, 2009
    Q1: U=I*R, 2*50=100, Parallell=same voltage.

    Q2: How do you figure 10V? 4+5+6=15, Series=same current, R=U/I, R2=5/2=2.5 ohms.
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day