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A magnetic field
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∙ 12y ago
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Conservative Nature of induced electric field?
The conservative nature of induced electric field is due to time varying magnetic fields. This occurs because the work done in moving a charge in a closed path in this field is not zero.
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
Why is an electric field induced in the human body by time-varying magnetic field gradients in MRI?
Look up Faraday's Law of Induction. A time-varying magnetic field (i.e. a field gradient) induces an electric field. You could think of this as a transformer, in which the gradient coil is the primary and the human body is the secondary!
What are the three ways in which voltage can be induced in a wire?
Voltage can never be induced in a straight open wire because flux through a wire is zero but a coil made up of a wire can have induced voltage. Methods Move a magnet to and fro through the coil, the magnitude can be changed by altering the relative velocities between them Move the coil relative to he still magnet Place the coil in a time varying magnetic field such that the flux linked through the coil changes with respect to time Place the coil tn an uniform magnetic field and alter its area with respect to time
Can an electric field exist without a magnetic field?
An electric field can exist even without the presence of a magnetic field. An example of this is a stationary electric field.
What is the velocity experienced by an electron in an electric field?
That depends on the strength of the electric field, and on the length of time the electron has been experiencing it. An electron in an electric field accelerates uniformly.
What are the physical significance of Maxwell's equations?
As per my knowledge,Maxwell's equations describes the relations between changing electric and magnetic fields. That means time varying electric field can be produced by time varying magnetic field and time varying magnetic field can be produced by time varying electric field.
What is the definition of electric field?
An electro-magnetic field is made up of both an electric and a magnetic field. And they both consist of photons. The two fields are orthogonal in direction. Which means their wave directions are perpendicular to each other. EMF's are produced each and every time the momenta of electrons changes. So when the speed, direction, or both of electrons change, EMF is created and the electric field is part of that EMF.
Can a electric current affect a compass?
Yes. An electric current is surrounded by a magnetic field, and this will affect a compass. Please note that this is more noticeable in the case of DC - for AC, the current changes all the time, it changes very quickly, and the AVERAGE value of the magnetic field is zero.
Is an electric field associated with an electromagnetic wave constant in time?
No, the electric field oscillates in magnitude and direction as it propagates in the electromagnetic wave.
What is a field in the electromagnetic spectrum?
There are electric fields and magnetic fields. If those change over time, the changes may propagate at the speed of light - that's called an electromagnetic wave.
