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Who first found the direction of induced emf?
The direction of induced electromotive force (emf) was first determined by physicist Michael Faraday in the early 19th century. He formulated Faraday's law of electromagnetic induction, which states that a change in magnetic flux through a circuit induces an emf. The direction of this induced emf is described by Lenz's law, which states that it will oppose the change in magnetic flux that produced it. This foundational work laid the groundwork for modern electromagnetic theory.
What is primary induction?
Primary induction refers to the initial phase in the process of electrical generation, particularly in electrical machines like generators and transformers, where an alternating current (AC) is induced in the primary winding. This induction occurs due to the changing magnetic field created by the current flowing through the primary coil, which then produces a magnetic flux that induces an electromotive force (EMF) in the secondary winding. The principle is based on Faraday's law of electromagnetic induction, which states that a change in magnetic flux can generate an electric current.
In the electrical circuit the higher the voltage the lower the?
Amps Ohm's law states the current is directly proportional to the applied emf (voltage) and inversely proportional to the resistance of the circuit.
Is induced voltage is always the opposite polarity opposes or subtract from the applied voltage?
Induced voltage is generally described by Lenz's Law, which states that the direction of induced voltage (or current) will be such that it opposes the change in magnetic flux that produced it. This means that when an external voltage is applied, the induced voltage acts in opposition to that applied voltage whenever there is a change in magnetic conditions. However, the total voltage in the circuit is the algebraic sum of the applied voltage and the induced voltage, so it can be seen as subtracting from the applied voltage in terms of net effect.
If the decrease voltage and the resistance stays the same is current increased or decreased?
This question follows Ohm's law which states, "Current is directly proportional to the applied EMF (voltage) and inversely proportional to the current in the circuit. <<>> decreased
Which law states that voltage is induced in a circuit whenever the flux linking the circuit is changing and that the magnitude of the voltage is proportional to the rate of change of the flux linkage?
Faraday's law of electromagnetic induction states that a voltage is induced in a circuit whenever there is a changing magnetic field that links the circuit, and the magnitude of the induced voltage is proportional to the rate of change of the magnetic flux.
What is Faraday's 1st law?
Faraday's 1st law of electromagnetic induction states that a change in magnetic field within a closed loop induces an electromotive force (emf) in the loop. This emf is proportional to the rate of change of the magnetic field with respect to time and is the basis for generating electricity in devices like generators and transformers.
What is the relation of conductor velocity?
The conductor velocity is directly related to the induced voltage in a conductor moving through a magnetic field. This relationship is described by Faraday's law of electromagnetic induction, which states that the induced voltage is proportional to the rate of change of magnetic flux through the conductor.
What is the concept behind electromagnetic induction?
Electromagnetic induction is the process where a changing magnetic field induces an electric current in a conductor. This phenomenon is described by Faraday's law of electromagnetic induction, which states that the induced electromotive force in a circuit is directly proportional to the rate of change of the magnetic field flux through the circuit.
What effect does the speed of the rotating loop have on the generated electric current?
The speed of the rotating loop affects the rate at which magnetic field lines are cut by the loop, resulting in a higher induced current when the speed is increased. This is due to Faraday's law of electromagnetic induction, which states that the induced electromotive force (EMF) is directly proportional to the rate of change of magnetic flux through the loop.
What is the affect on induced voltage of adding more turns of wire to a coil?
Adding more turns of wire to a coil increases the induced voltage when the coil is exposed to a changing magnetic field. This is due to Faraday's Law of Electromagnetic Induction, which states that the induced voltage is directly proportional to the number of turns in the coil. Therefore, more turns result in a greater overall induced voltage for the same rate of change in magnetic flux. This principle is commonly utilized in transformers and inductors to enhance their voltage output.
What is stated by the law universal of gravitation?
The Law of Universal Gravitation is derived from observations by Isaac newton, called induction. It states that, "Any two bodies in the universe attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them."
What law states that emf is enduced in a loop of wire is proportional to the rate of magnetic flux through the coil?
That is Ampere's law. The emf in a loop is proportional to the rate of change of the magnetic flux.Mathematically Curl E = -dB/dt and the emf comes from applying Stokes's theorem to the surface integral of B.
What is the formula in electromagnetic induction?
The formula for electromagnetic induction is given by Faraday's law, which states that the induced electromotive force (emf) in a closed loop is equal to the negative rate of change of magnetic flux through the loop. Mathematically, it can be expressed as emf = -dΦ/dt, where emf is the induced electromotive force, Φ is the magnetic flux, and t is time.
What is Farady's law?
Three laws of electromagnetic induction, and two laws of electrolysis, all proposed originally by English physicist Michael Faraday. The laws of induction are: (1) a changing magnetic field induces an electromagnetic force in a conductor; (2) the electromagnetic force is proportional to the rate of change of the field; and (3) the direction of the induced electromagnetic force depends on the orientation of the field. The laws of electrolysis are: (1) the amount of chemical change during electrolysis is proportional to the charge passing through the liquid; and (2) the amount of chemical change produced in a substance by a given amount of electricity is proportional to the electrochemical equivalent of that substance.
What is lenz law of electromagnetic induction?
Lenz's law states that 'for a current induced in a conductor by a changing magnetic field, the current is in such a direction that its own magnetic field opposes the change that produced it.'
What are the factors that determine the amount of induced current?
The factors that determine the amount of induced current in a coil include the rate of change of magnetic flux through the coil, the number of turns in the coil, and the resistance of the coil. Faraday's law states that the induced electromotive force (emf) is directly proportional to the rate of change of magnetic flux.
