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Why generator produces only AC?
A generator produces electricity by moving wires through a magnetic field. The direction of the induced current is dependent upon the direction in which the wire crosses the magnetic field. In a generator the magnetic field is usually fixed - and the wires are spinning through it. So: Visualize a horizontal magnetic field. The axis of rotation of the wires is perpendicular to the field. Any given wire will be cutting up through the field at a given point... then, 180º later will be cutting down through the same field. The direction of the induced current will reverse with each half-rotation because the wire will be moving in the opposite direction relative to the magnetic field. (In the USA the generators produce "60 cycle" current. That tells you that the generators are turning their wires (coils) at 60 revolutions per second.) Richard yeaa buddie...Lickety splyt
What is an example of magnetic field?
The atmosphere of the earth is a magnetic filed
How can one determine the direction of the magnetic field for a current carrying wire?
Curl your right-hand fist around the wire, with your thumb pointing in the direction of the current in the wire. Your four curled fingers point in the direction of the magnetic field that surrounds the wire.
How electric current have magnetic effect?
The magnetic force acts only on moving electric charges; A constant electric current produces an unchanging magnetic field and a changing electric current produces a changing magnetic field.
Compass magnets can only be deflected by electromagnets such as Earth's magnetic field?
This is FALSE. TWICE!The Earths magnetic Field is not Electromagnetic.A compass can be deflected by any Magnet.
How would you use the Earth's magnetic field to tell you where on Earth you are?
You can't. The only thing the earth's magnetic field can tell you is the direction from where you are toward the earth's magnetic pole. That doesn't tell you anything about where you are.
Does hemoglobin attracted by external magnetic field?
No. It is only possible orientation along the direction of the magnetic field. Each dipole interacts with other dipoles and any movement is stopped.
Does a magnetic field exert any pressure on a charge moving perpendicular to its direction?
Only moving charges experience force in a magnetic field. i.e.,on moving ,a charge q,with velocity v ,experiences a force in the presence of electric field(E) and magnetic field (B). It can be represented as F= q(v x B)~(Ftotal=Felectricfield + Fmagneticfield ) Force acts perpendicular to both magnetic field and velocity of the electron. Its direction is given by right hand thumb rule or screw rule. The magnetic force is zero if charge is not moving, since lvl=0.
How do scientist know that magnetic field originate from north always?
There are two kinds of magnetic poles. It is just a matter of convention that we *define* one of the north. Then we *define* the direction of the magnetic field to be the direction of force experienced by a test north pole. Magnetic field lines and their directions don't really exist, they can only be observed indirectly. It follows from our definition that they must originate in the north poles.
Is it possible to apply magnetic field to wood?
only if the iron deposits in the soil are so great and the tree absorbs enough of that iron would wood be magnetic.
How are electric force and magnetic force similar?
Both act only on charged particles (ions, protons, or electrons). ?However, an electric field (which generates an ELECTRIC FORCE) acts on a particle in the same direction as the field, given by the equation:F(vector) = q*E(vector)The resulting force vector is in the same direction as the field vector (for positive charges).A magnetic field generates a force ONLY on a MOVING charge, and ONLY if the charge is moving non-parallel to the magnetic field:F(vector) = q*v(vector) x B(vector)Because of the cross-product, the magnetic force is a direction perpendicular to the velocity and magnetic field vectors (use the right hand rule to figure out the direction of magnetic force). ?The particle will still have momentum from its initial velocity, so an applied magnetic field will (pretty much) always make the particle move in a curved path.
What is magnetic order?
Selenium is diamagnetic; it only creates a magnetic field in opposition to an external magnetic field.
What is selenium's magnetic ordering?
Selenium is diamagnetic; it only creates a magnetic field in opposition to an external magnetic field.
Why generator produces only AC?
A generator produces electricity by moving wires through a magnetic field. The direction of the induced current is dependent upon the direction in which the wire crosses the magnetic field. In a generator the magnetic field is usually fixed - and the wires are spinning through it. So: Visualize a horizontal magnetic field. The axis of rotation of the wires is perpendicular to the field. Any given wire will be cutting up through the field at a given point... then, 180º later will be cutting down through the same field. The direction of the induced current will reverse with each half-rotation because the wire will be moving in the opposite direction relative to the magnetic field. (In the USA the generators produce "60 cycle" current. That tells you that the generators are turning their wires (coils) at 60 revolutions per second.) Richard yeaa buddie...Lickety splyt
It affects only objects that have magnetic domains what is it?
Magnetic field
Does earth's magnetic field only affect other planets?
No. Earth's magnetic field only affects earth, not other planets.
How is the magnetic field that forms with direct current and the magnetic field that forms with alternating current An explanation please?
A magnetic field is generated when a current flows through a wire. This current can be D.C. too - the phenomena is not limited to A.C. current. The direction of the magnetic field depends upon the direction of current flow. Therefore, if you connect a D.C. source a magnetic field is generated with a constant polarity. If you connect an A.C. source the magnetic field alternates in polarity. It is interesting to note that a magnetic field is only measured or observed when a charge moves relative to you as an observer. It is a relative property! If you were able to move down the wire with the charge (or alongside the wire at the same speed as the charge), so that the charge is no longer moving relative to you, you would see that the magnetic field disappears completely! The electric and magnetic fields are related in a peculiar way, similar in some sense as to space and time in that they are relative properties and depend entirely upon the observer.
