Recent content by wkn0524

  1. W

    Calculating Potential Difference in a Series Circuit

    1. If the current in the 4.0 ohm resistor is 1.4A. What is the magnitude of the potential difference. Va-Vb? 2. V=IR, 1/Req=1/r1 +1/r2 ... 3. Va-Vb= 48V I was stuck on beginning of the question. I knew how to start if the voltage is given but now asking me to find the potential...
  2. W

    Magnitude of the Electric Force on q

    Sure, I'm trying out more than 1 hour. Trying again.
  3. W

    Magnitude of the Electric Force on q

    1. If a = 3.0 mm, b = 4.0 mm, Q1 = -60 nC, Q2 = 80 nC, and q = 30 nC in the Figure Q1, what is the magnitude of the electric force on q? 2. F = kq1q2/r^2 Coulomb’s Law 3. Answer is F=1.0N I'm a beginner in electrical study, i stuck on the net force. My steps are: F1=kQ1Q2/a^2 , F2= kQ2q/r^2