Problem 29.5: Find emf in loop in changing magnetic field

Please wait for the animation to completely load.

The animation shows the cross section of a wire loop in a changing magnetic field (the wire loops out of and into the screen). The graph shows the magnetic field in the x direction as a function of time (position is given in centimeters, time is given in milliseconds, 10-3 s, and magnetic field strength is given in tenths of tesla, 10-1 T). Restart .

  1. Sketch a graph of the induced emf in the loop as a function of time.
  2. What is the maximum value of the emf?
  3. What is the direction of the current in the loop as a function of time (use the convention that current flowing out of the top of the loop is positive)?

Problem authored by Anne J. Cox.

Physlets were developed at Davidson College and converted from Java to JavaScript using the SwingJS system developed at St. Olaf College.

OSP Projects:
Open Source Physics - EJS Modeling
Physlet Physics
Physlet Quantum Physics
STP Book