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Moving electrons always have a magnetic field around them
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What most occur to produce electric current?
Chemical changes, change in magnetic flux linked with a conductor cause the production of electric current.
What is needed for electromagnetic induction?
An electric current is produced by the change in Magnetic flux over timeRead more: How_do_electromagnets_work
How can the magnetic flux associated with coil or a closed circuit be changed?
A simple method for altering the magnetic flux would be to change the amount of current flowing in the coil or circuit. Generally speaking, more current, more magnetic flux, and vice versa.
Can a magnet create electricity?
yes, when a copper wire is coiled around it and attached to a battery, an electrical current passes through it. =============================== The above is not the apt answer for the query made. Yes when a magnet is moved through a coil of wire then current is induced in it. This phenomenon is known as electro magnetic induction and current is known as induced current. This is because of change of magnetic flux linked with the coil. So whenever there is a change in magnetic flux linked with a closed circuit then current is induced in the circuit. The current lasts so long as there is change in magnetic flux. Just link of magnetic flux will not induce any current. Only the change of magnetic flux does everything. This is very very important.
What is magnetization current?
There is no magnetic current because there are no magnetic charges.
Does constant magnetic flux in a coil induce a current in it?
Faraday's Law: the E.M.F. induced in a conductor [the current is caused by the E.M.F.] is directly propotional to the rate of change of magnetic flux linkage.A constant magnetic flux isn't changing, so the rate of change is zero and the induced E.M.F is zero. No E.M.F. = no current.
Why transformer not produce DC current?
because transformer in made inductorAlternative AnswerTransformers are AC machines, and do not work with DC. This is because they require an alternating current to set up an alternating magnetic flux which then induces an alternating voltage into its secondary. Remember, there has to be a changing magnetic flux and a conductor for an emf. to be induced into that conductor.
What is the consequence of using DC as input in a transformer?
Basically, Transformers use magnetic energy to transmit a signal (voltage or current) from its primary to secondary. So there needs to be a magnetic flux associated with it. As we know, alternating current produces a variable flux and it causes an emf change in the secondary winding. But direct currents produce a constant magnetic flux which does not help to build up emf in the secondary. Another disadvantage is that there would be no self induced emf in the primary which opposes the changing current (in case of alternating currents) according to Lenz's law. So, the primary winding may burn out due to heavy constant current and its low input resistance.
Flux in DC vary or constant.?
In DC or direct current, the flux is constant. AC or alternating current is variable.
Explain the principle of a alternating current generator?
Well, a magnetic will be spun with one pole up and then the other pole up inducing a magnetic flux, and a coil of copper will be encompassing the magnetic and every time the magnet flips its poles around, thus inducing magnetic flux, a small bit of current will be made. When the flipping of the magnet is faster the current comes faster, but alternates with the flipping of the magnetic, or the changing of the magnetic flux.
What is the effect of variable area to the magnetic flux within the solenoid at constant number of windings and current?
area is equal to the magnetic flux, therefore it is equal.
How does an auxiliary transformer work?
Auxiliary transformer- current transformer The current transformer is working based on two theories. 1.Ampheres law. 2.Faradays law. Amp.law- whenever a current flows through the conductor it will produce magnetic flux around the conductor. based on above principle- current flows through the primary will induce a magnetic flux in the CT core. Faraday law- whenever a conductor cuts the magnetic flux or magnetic flux cuts the conductor will induce a emf across the conductor based on above principle- the magnetic flux in the core will cuts the windings. so emf is induced across the secondary terminals . whenever the secondary terminals connected with burden will make a closed path and current flows through the secondary to burden.
