1831- Michael Faraday discovered that current and voltage could be induced when
a conductor moves within a magnetic field.
(Note: 3 dimensional view)
If this wire is moved ___________________(perpendicular to the field), maximum current
will be generated. If it's moved _______________________(parallel to the field), no current will be generated.
Third Left Hand Rule
Step 1: Draw in the flux lines
Step 2: 4 fingers follow ______________ ______________
Step 3: _____________ follows movement of ___________ (Given)
Step 4: _____________ shows _______________ on electrons - The current direction
Example) If the wire in the picture above is moved upward, which way will the electrons flow?
Answer: Into the page OR Out of the page? (circle)
Calculating the voltage induced
(V) Induced voltage - also called ____________- Electromotive Force
V =
B - ___________________Field Strength
l - ____________________________of conductor (in meters)
v - ______________ of conductor moving through the field