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Electromagnetic induction is the production of an electromotive force across a conductor exposed to time varying magnetic fields.

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A generator contains coils of wire , magnetic field , induced electromotive force , electric current pass around the circuit.

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Magnetic Field Demonstrations Simple Wire Coils

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For more information: http://www.7activestudio.com info@7activestudio.com http://www.7activemedical.com/ info@7activemedical.com http://www.sciencetuts.com/ 7activestudio@gmail.com Contact: +91- 9700061777, 040-64501777 / 65864777 7 Active Technology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc .

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- wire stationary in the magnetic field → no corrent generated
-moving the magnet → current is gerated
-moving the wire faster across the magnetic field → larger current is generated
-reversing the direction of motion of he wire → the current is reversed

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500~600 turns enamel wire bobbin & Neodymium magnet & LEDs

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Magnetic pole entering or leaving the coil : north pole – north pole – south pole – south pole
Pushed in or pulled out : in  –  out – in - out

Current direction : anticlockwise - clockwise – clockwise - anticlockwise

Induced polarity of X : north pole – south pole – south pole – north pole

Magnet and coil : repel – attract – attract - repel

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Physics - Understanding Electromagnetic induction (EMI) and electromagnetic force (EMF) - Physics

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- Fleming's rule
- Solenoid rule

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Check us out at http://physics.tutorvista.com/ Fleming's Rule: Fleming's left hand rule shows the direction of force applied on a current carrying conductor in a magnetic field. The direction of current and that of the field perpendicular to each other and found that the force is perpendicular to both of them.

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Fleming's right-hand rule  shows the direction of induced current when a conductor moves in a magnetic field. It can be used to determine the direction of current in a generator's windings.

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Theorical reference 2 - The solenoid rule

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Theorical reference 2 - The solenoid rule

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Anticlockwise and clockwise

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1. when a wire cuts the lines of a magnetic field, an electromotive force is induced in  wire
2. if the wire is part of a complete circuit, the induced  electromotive force causes a current in the circuit
3. the current is increased if the wire moves faster or a stronger magnet is used
4. the direction of an induced current opposes the change that causes it