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What is the average induced emf in the loop?
The average induced electromotive force (emf) in the loop is the average amount of voltage generated in the loop due to a changing magnetic field.
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 the induced emf in case (a)?
In case (a), the induced emf is the electromotive force generated in a coil or conductor due to a changing magnetic field.
What happens when a loop of wire cuts magnetic line of force?
When a loop of wire cuts magnetic lines of force, an electromotive force (EMF) is induced in the wire. This phenomenon is known as electromagnetic induction, and it is the basic principle behind generating electricity in generators and the functioning of electric motors. The induced current in the loop is proportional to the rate at which the magnetic lines of force are cut by the loop.
Is emf a scalar or vector quantity?
Emf has direction within a current loop, though it is not scalar. It's a bit between though as direction should be otherwise accounted for when discussing induced Emf. Not quite either.
What is the average induced emf in the loop?
The average induced electromotive force (emf) in the loop is the average amount of voltage generated in the loop due to a changing magnetic field.
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 the induced emf in case (a)?
In case (a), the induced emf is the electromotive force generated in a coil or conductor due to a changing magnetic field.
What happens when a loop of wire cuts magnetic line of force?
When a loop of wire cuts magnetic lines of force, an electromotive force (EMF) is induced in the wire. This phenomenon is known as electromagnetic induction, and it is the basic principle behind generating electricity in generators and the functioning of electric motors. The induced current in the loop is proportional to the rate at which the magnetic lines of force are cut by the loop.
How is emf induced in an alternator?
EMF or electromotive force, i.e.Voltage, is generated when the magnets inside the alternator turn within the wire coil of the alternator.
Is emf a scalar or vector quantity?
Emf has direction within a current loop, though it is not scalar. It's a bit between though as direction should be otherwise accounted for when discussing induced Emf. Not quite either.
What is the significance of the magnetic flux through a loop in the context of electromagnetic induction?
The magnetic flux through a loop is important in electromagnetic induction because it determines the amount of induced electromotive force (emf) in the loop. When there is a change in magnetic flux through the loop, it induces an emf, which can generate an electric current. This phenomenon is the basis for many electrical devices and technologies, such as generators and transformers.
How would you position a flat loop of wire in a changing magnetic field so that there is no emf induced i the loop?
To position a flat loop of wire in a changing magnetic field so that no electromotive force (emf) is induced in the loop, align the plane of the loop parallel to the direction of the magnetic field lines. This orientation ensures that the magnetic flux through the loop remains constant, even as the magnetic field changes. If the magnetic field changes direction, the loop should be rotated to maintain this parallel alignment, thus preventing any change in flux and the subsequent induction of emf.
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 induced emf in the coil when a magnetic field is applied?
When a magnetic field is applied to a coil, it creates an induced electromotive force (emf) in the coil. This emf is generated due to the change in magnetic flux through the coil, according to Faraday's law of electromagnetic induction.
When lines of force are cut by a conductor you have?
When lines of force are cut by a conductor, an electromotive force (EMF) is induced in the conductor according to Faraday's law of electromagnetic induction. This induced EMF can drive an electric current to flow in the conductor, resulting in the generation of electrical power.
What is the expression to find the induced current i(t) as a function of time in a given electrical circuit?
The expression to find the induced current i(t) in an electrical circuit is given by Faraday's Law of Electromagnetic Induction, which states that the induced electromotive force (emf) is equal to the rate of change of magnetic flux through a circuit. This can be expressed as: emf -d/dt where emf is the induced electromotive force, is the magnetic flux, and d/dt represents the derivative with respect to time. By solving this equation, you can find the induced current i(t) as a function of time in the given electrical circuit.
