Magnetic InductionBd dt
ε Φ = −
Induced emf
proximity
Frog Levitation in a Magnetic Field
Smooth TopSmooth Top Oscillating current through coil below special glass Oscillating current through coil below special glass produces B field, which in turn produces current in produces B field, which in turn produces current in cooking utensil. cooking utensil. Heat is produced in utensil .Heat is produced in utensil .
Japan’s Maglev Vehicle
Changing Magnetic Flux
Lenz’ Law
Lenz’ Law
Induced Current
Two electrical oscillators:Beat frequency is heard due to metal proximity
Airport metal detector:Inductance increases and current drops
Frog Levitation in a Magnetic Field
Japan’s Maglev Vehicle