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Induced Voltage created on a loop entering a magnetic field

  • Thread starter allison20
  • Start date
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1. Homework Statement

A 0.69m long and 0.69m wide loop is moved at a constant velocity of 0.81m/s from a region of zero magentic field into a perpendicular constant magnetic field of 0.21T. Calculate the magnitude of the induced voltage in the loop while it is entering the B-field

2. Homework Equations
EMF=-N*A*B/T


3. The Attempt at a Solution
I can plug in the numbers for the number of loops N (1), the area A (LxW), and the magnitude of the field B (.21T), but how do I find the time from just knowing the velocity?
 

tiny-tim

Science Advisor
Homework Helper
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If you know the velocity and dimensions you should be able to calculate area swept out per second and therefore flux change per second
 

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