![]() ![]() Rate of change implies we consider the variable with respect to time (in seconds) Magnetic flux = Magnetic field strength x Area = BA. If we assume a coil placed on a horizontal air space and bring north pole towards it from upper side and then we see coil from upper side, the current induced is in anti clockwise direction.Ĭalculating the induced EMF įaraday's law states: Induced EMF is equal to the rate of change of magnetic flux. For example, if we bring north pole of a magnet towards a neutral coil with some velocity, the current is induced in a way that it opposes the north pole or simply north pole is induced at the side where north pole is brought near which will result in the flow of current in the coil. Reversing the motor effect B/A Magnetic flux Direction of induced current ĭirection of induced current is according to the Lenz's law, which states that current in a coil is induced such that it always opposes the change producing it. Magnetic Flux density is a measure of the strength of a magnetic field and is essentially how dense the field lines of a magnetic field are within a given height. Michael Faraday state in his law that: The magnitude of the electromotive force(EMF) generated is proportional to the rate of change of magnetic field When a conductor is moved through a magnetic field, an EMF is generated and the interaction of the magnetic field produced by the conductor with the magnetic field that was present cause deflection. ![]()
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