1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Simple Generator - Calculating N Loops

  1. Sep 26, 2012 #1
    Simple Generator - Calculating "N" Loops

    1. The problem statement, all variables and given/known data

    A simple generator is used to generate a peak output voltage of 26.0 V . The square armature consists of windings that are 6.3 cm on a side and rotates in a field of 0.440T at a rate of 60.0 rev/s. How many loops of wire should be wound on the square armature?
    Express your answer as an integer.

    2. Relevant equations

    ε / 2Blv sin θ = N

    3. The attempt at a solution

    l = 0.063 m
    ε = 26.0 V
    B = 0.440 T
    v = 1.89 m/s (Is this what is incorrect?)

    v = ωr
    v = (60.0 rev/s)(0.0315 m)
    v = 1.89 m/s

    (26.0 V) / (2)(0.440 T)(0.063 m)(1.89 m/s)

    (26.0 V) / (.104 T m^2 / s) = 250 loops

    ETA : I assumed the angle is 90 degrees.
  2. jcsd
  3. Sep 26, 2012 #2


    User Avatar
    Homework Helper

    Re: Simple Generator - Calculating "N" Loops

    ω=2pi times revolutions/second

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook