Peak EMF in Generator Coil at 90.0 Hz: 0.012V

  • Thread starter Thread starter ProPatto16
  • Start date Start date
  • Tags Tags
    Emf Generator
Click For Summary

Homework Help Overview

The discussion centers around calculating the peak electromotive force (emf) in a generator coil with specific parameters, including the number of turns, dimensions, frequency of rotation, and magnetic field strength. The subject area involves electromagnetism and generator theory.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to apply the formula for emf using given values but receives feedback indicating their answer may be incorrect. Participants suggest alternative values for the peak emf, leading to questions about the accuracy of the calculations and the significance of rounding.

Discussion Status

The discussion is ongoing, with participants providing different suggestions for the peak emf value. There is no clear consensus on the correct answer, and the original poster is encouraged to reconsider their calculations based on feedback.

Contextual Notes

Participants note that the original poster's answer may not align with expectations set by the homework platform, raising questions about the precision required in the response.

ProPatto16
Messages
323
Reaction score
0

Homework Statement


A generator has a 170-turn square coil, 5 cm on a side.
Find the peak emf in this coil when it's rotating at 90.0 Hz in Earth's field, 5*10^-5 T
Express your answer to one significant figure and include the appropriate units.

Homework Equations



Emf = NBAw

The Attempt at a Solution



N = 170
B = 5*10^-5
A = 0.05^2 = 0.0025m^2
w = 2*pi*f = 565.49

subbing in, emf = 0.012V




BUT. mastering physics is telling me its wrong.
 
Physics news on Phys.org
Try 12.0 mV.
 
nope, wrong.
 
nevermind, its 10mV... they don't seem to care for accuracy.
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
10K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 3 ·
Replies
3
Views
5K
  • · Replies 6 ·
Replies
6
Views
2K
Replies
3
Views
2K
Replies
5
Views
3K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K