1. ECE 201 Circuit Theory I1 Determining Dot Markings

2. ECE 201 Circuit Theory I2 Arbitrarily Select One Terminal Mark with a dot

3. ECE 201 Circuit Theory I3 Assign a Current to the Terminal

4. ECE 201 Circuit Theory I4 Apply the Right-Hand Rule Determine the direction of magnetic field established by the current

5. ECE 201 Circuit Theory I5 Pick one terminal of the second coil Assign a current into this terminal

6. ECE 201 Circuit Theory I6 Apply the Right-Hand Rule Determine the direction of magnetic flux established by this current.

7. ECE 201 Circuit Theory I7 Compare the directions of the fluxes If the fluxes have the same direction, place a dot at the terminal where the test current enters. If the fluxes have different directions, place a dot on the terminal where the test current leaves.

8. ECE 201 Circuit Theory I8 Summary

9. ECE 201 Circuit Theory I9 Let’s Try Some Examples

10. ECE 201 Circuit Theory I10

11. ECE 201 Circuit Theory I11

12. ECE 201 Circuit Theory I12

13. ECE 201 Circuit Theory I13