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A changing Magnetic flux induces an Electric field. This can create a current in a wire to power a💡!
No battery needed!
No battery needed!
This is the idea behind power generators:
• Spin a magnet with a mechanical source (e.g. water)
• The changing Magnetic field induces an AC current in nearby wires
• The current can then be sent to an "outlet" (or applied directly as shown here)
• Spin a magnet with a mechanical source (e.g. water)
• The changing Magnetic field induces an AC current in nearby wires
• The current can then be sent to an "outlet" (or applied directly as shown here)
This is precisely how "induction stoves" work
• The oscillating magnetic field wirelessly induces a current in the pot
• The current flowing through the pot results in resistive heating
The coolest thing about induction stoves is that the stovetop itself doesn't get hot!
• The oscillating magnetic field wirelessly induces a current in the pot
• The current flowing through the pot results in resistive heating
The coolest thing about induction stoves is that the stovetop itself doesn't get hot!
This phenomenon is referred to as Electromagnetic Induction
👇is one of Maxwell's equations written in a form that is usually called "Faraday's Law of Induction"
• it tells us that a Voltage ℰ is induced by a time changing Magnetic flux Φ
👇is one of Maxwell's equations written in a form that is usually called "Faraday's Law of Induction"
• it tells us that a Voltage ℰ is induced by a time changing Magnetic flux Φ
