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How would you position a fat loop of wire in a changing magnetic field so that there is no emf induced in the loop?
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Why emf is not induced if a metallic loop is placed in a nonuniform magnetic field?
emf is only induced if the flux through the loop varies with time. if u keep it in a nonuniform magnetic field, the flux wont be uniform throughout the area of the loop, but whatever it will be , it will remain the same.. as at a point in the field, the field strength is same. means the magnetic field is not same at all points but if u consider a single point, there, it remains the same, its not changing. hence no emf is induced. hope u got it.
When there is a sudden collapse of a magnetic field in or around a solenoid. what happens?
Electric current will be induced in such a way that the flux of the magnetic field will be constant and thereby the induced current will create magnetic field in the same direction. This is what we call Lenz's law(law of conservation of energy).
What is affected by a electromagnet?
Other magnets, as well as magnetic substances such as iron, in which magnetism is induced by the external magnetic field.
What is the classical explanation of a dc electric current in a metallic wave?
A changing magnetic field always produces an electric field, and conversely, a changing electric field always produces a magnetic field. This interaction of electric and magnetic forces gives rise to a condition in space known as an electromagnetic field.
Why do non magnet does not exhibit magnetic property?
They do but it in the external magnetic field. In order for material to have magnetic properties without any fields it should be ferromagnetic. In paramagnetic all spins are pointed in the same direction. In diamagnetic spins are oriented randomly it vanishes the effect.
How is voltage induced in a conductor?
According to Faraday's law, a voltage is induced in a conductor by a changing magnetic field.
How does the frequency of a changing magnetic field compare with the frequency of the alternating voltage that is induced?
A changing magnetic field generates an electric field and alternating currents are accompanied (or caused) by alternating voltages.
What is maxwell's counter part to faradays law?
A magnetic field is induced in an region of space in which and electric field is changing with time.
What relates a magnetic field changing with time in a region of space to the electric field induced in that region of space?
Faraday's Law
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 is difference between induced voltage and induced current?
Just as a current flowing through a wire will produce a magnetic field, so a wire moving through a magnetic field will have a current flowing through it. This is called electromagnetic induction and the current in the wire is called induced current. A stationary wire in the presence of a changing magnetic field also has an induced current. A changing magnetic field can be produced either by moving a magnet near to the stationary wire or by using alternating current. A stationary wire in a magnetic field which is not changing will have no current induced in it. You will sometimes see this effect described as induced voltage. Strictly speaking, you will only get an induced current in the wire if it is part of a complete circuit. A wire which is unconnected at both ends will have a difference in voltage between the ends (a potential difference) but current can only flow when the wire is in a circuit. Induced current is used in electricity generation and transformers.Another AnswerThere is no such thing as an 'induced current', only an 'induced voltage'. Current will flow only if the conductor into which the voltage is induced forms part of a closed circuit.
What is induced by an electric field that changes with time?
A magnetic field
What is induced by the rapid alternation of a magnetic field?
you would induce voltage therefore chanfing the magnetic field
How induced current is produce?
when a conductor moves accross a magnetic field or when magnetic field moves with respect to a stationary conductor for current to be induced, there must be relative motion between the coil and the magnetic.
How induced current produce?
when a conductor moves accross a magnetic field or when magnetic field moves with respect to a stationary conductor for current to be induced, there must be relative motion between the coil and the magnetic.
What does a changing electric field induce?
A changing electric induces changing electric fields:The law of Electromagnetism is Invariance of the Electromagnetic field. The vector or induction portion is "o = dEv/dr + Del Er + DelxEv = dEv/cdt + Del Er + Del x Evthis is the same law as Faraday's law but it includes the Gradient Del Er0= dBv/dt + Del Er + Del xEv
How does a coil of wire create a electrical current?
By itself, it won't. To have an electrical current, you need a voltage. This voltage might be applied externally, or it might be induced by movement of the wire through a magnetic field (or by a changing magnetic field).
