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Can an electron at rest be set in motion by the magnetic field?
Wiki User
∙ 12y ago
Sure. A charge in a magnetic field experiences a force.
A force acting on a mass produces acceleration.
Remember the old-style TV sets that were about 6 feet deep from front to back ?
That type of picture tube is called a 'CRT', for "cathode-ray tube'.
There's a hot wire at the back end of the picture tube that produces a cloud of
electrons. The front face of the picture tube has a high positiver voltage on it,
to attract the negative electrons to the front. On the way there, the electrons
have to go through these magnet coils that are around the neck of the picture
tube. The magnetic field inside the neck pulls the stream of electrons left and right,
up and down, left and right, and that's how they draw a picture on the front face
when they get there.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agono, it spirals around it.
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Is the mass of a proton half the mass of a electron?
No. The mass of a neutron is far, far, far greater than the mass of an electron. In fact, the mass of a neutron is approximately about 1840 times greater than the mass of an electron. The particle that has exactly the same mass as an electron is its antiparticle, the positron.
How is newtons law and earthquakes related?
Newton's law of inertia applies: A body in motion tends to stay in motion, and a body at rest tends to stay at rest. This applies to earthquakes because a building or other large, fixed object is "at rest" and is not designed to be in motion. When the land vibrates and moves under a building due to an earthquake, the building has the contravening forces of inertia (the at-rest building tends to try to stay at rest) versus the ground under the building moving, and the ground doesn't play nice by moving smoothly and continuously in one direction. If it were not for inertia, the building and its contents (including people!) would simply move with the ground, and neither the building nor its contents would suffer damage.
Convection in the What creates earths magnetic filed?
Earth's molten outer core rotates. That outer core is made up mostly of molten iron. The movement of the molten iron produces the magnetic field.When currents in the outer core force the solid inner core to spin at a slightly faster rate than the rest of the planet causes the Earth to have a magnetic field.
Compare the mass of an electron to a proton.?
Electrons weigh in at about 9.1 x 10^-28 grams and protons about 1.67 x 10^-24 grams, making the proton about 1,837 times heavier than the electron. This is roughly about the same weight of a rabbit compared to an elephant.
What are the mass of electron proton and neutron?
one one zero
The study of electric charges at rest?
Electrostatics hahaha, lol all these questions are on my word search
If an electron is at rest in an electric field can it be set into motion by the electric field?
Yes. When a magnetic field is moving with respect to the electron, a force will be exerted on the electron. This is a fundamental relationship. One of the four basic forces in the universe is the electromagnetic force. Not the electric force and not the magnetic force - the electromagnetic force. Let's check out a few fundamental ideas. The movement of any charged particle will create a magnetic field around its path of travel. No exceptions. And any magnetic field is the result of some kind of movement of charged particles. All magnetic fields result from some kind of uniform charge movement. There is a bottom line here. Wave a magnet at any stationary charged particle and it will move if it can. This basic idea is behind all power generation and electric current flow. All of it. Imagine a world where charged particles did not respond to magnetic fields and you'd be in a world with no cell phones, no TV or videos, no computers, no electric lights and refrigerators, and almost nothing we call "technology" today. A link is provided to the Wikipedia article on electromagnetics.
Will a charged particles at rest be affected by a magnetic field?
Yes.
Does an electron deflect greater than a proton in a magnetic field?
The Lorentz force, F = q(v x B), where q = electric charge, v = velocity of the charge particle, and B = magnetic field.The direction of the charge particle is determined by v. F, v, and B are vectors, and follow the right-hand rule. First, point your right arm straight in the direction the particle is traveling, palm/hand flat with the thumb pointing at a right angle to the other 4 fingers; second, curl your right hand (bend at the wrist) toward where the magnetic field is pointing. The thumb indicates the direction of the force.For example, assume the magnetic field is pointing perpendicularly out of this page (a plane) toward you. Assume the charge particle carries a positive charge and is traveling up the page in the beginning. Then the force acts on the particle as a centripetal force and pulls the particle toward the right. The net result is that, in an ideal situation, the particle rotates in a clockwise direction on the plane. A negative particle will do so in a counterclockwise fashion.
Why a magnetic needle comes to rest the north south position?
The compass needle is attracted by the Earth's magnetic field.
Are there any other forces used in magnetism?
When we begin to study magnetism, we find that the questions pile up faster than the answers. The force of magnetism is a part of one force that we call the electromagnetic force. The electromagnetic force is, with gravity and the strong and weak nuclear forces, one of the four fundamental forces in the universe. Magnetism is the result of the uniform motion of electrically charged particles, and it cannot exist without them. When any charged particle moves, it creates a magnetic field around its path of travel. Always. It's like a little "magnetic tunnel" that forms around it when the charge moves. And the polarity of the field will be around the path of travel clockwise or anticlockwise, depending on which way you're looking at it, and what the polarity of the charge is. For an electron, the common unit of "electricity" we see every day, the field will be clockwise around the electron if you view it coming at you. Take your left hand and stick your thumb out like you're hitchhiking, and leave the rest of your fingers curled up. The thumb points in the direction of the electron's travel, and the fingers curl in the direction that the magnetic field wraps around the path of travel. Hold your hand in the manner suggested and look at your thumb with your thumb pointed at you. See your curled fingers? That's the polarity of the magnetic field. Left hand rule, simple and easy. Now we'll expand that. Simply stated, in a magnet, there is "uniform motion" associated with electrons. Enough electrons are orbiting atomic nuclei and moving in the same direction at the same instant of time that an "overall" magnetic field is created. We say that the magnetic domains within the magnetic material are aligned, and there will be a magnetic field around the object with those aligned magnetic domains. This differentiates "regular" material from magnetic material. Electrons are always in motion around atoms in all material, and they create magnetic fields all the time. But it's "random" motion, and the fields are all "jumbled" in there. A bar magnet is ferromagnetic material that has had its magnetic domains aligned. The alignment of the magnetic fields gives the bar magnet its magnetic properties. The bottom line here is that the uniformly moving electrons create the magnetic field. That's why we call the phenomenon the electromagnetic force. Not the electric force, and not the magnetic force, but the electromagnetic force. The electric and magnetic forces come as a set; you get all or none.
How are electromagnetic waves formed?
they are formed when a electric field and a magnetic field couple. When ever a charged particle undergoes an acceleration it emits electromagnetic radiation. Therefore when an electron 'jumps' from a high energy quantum state to a lower energy quantum state it produces em radiation of a particular frequency. And, more precisely, EM waves are created by accelerating a charge. An electron at rest (or cruising at constant speed) has a stable electric field radiating outwards (really inwards for negative charge). If the electron is accelerated, a ripple in the field radiates outward with the speed of light, with the strongest effect perpendicular to the electron's vector of acceleration and weakest part (zero) along the vector. The electric field fluctuation is in any plane along the vector, and the magnetic part is in the plane perpendicular to that and the vector.
Why a freely suspended magnet comes to rest in north south direction?
It reacts to the magnetic field of the Earth.
What does static charge mean?
A buildup of electric charge in an object caused by the presence of many particles with the same charge.
Does a coil carrying electric current create a magnetic field?
No, The magnet rotates/moves through the coil, inducing a current into the coil by disturbing the coils magnetic field. A transformer works the exact same way.
What happens to a charged particle at rest in the magnetic field Does the particle accelerate?
The particle stays at rest a= f/m = 0; because force = qvB is zero if v=0.
How does changing current affect the magnetic force on a wire suspended in a magnetic field?
Current passing through a wire in a magnetic field creates its own magnetic force in some direction. If you increase the current, force will be increased. If the direction of current is changed, direction of force will also be reversed. Direction of current is found by applying right hand rule.
