Charged particle Definition and 263 Threads

It is known that the motion of a charged particle creats a magnetic field and also at speeds approaching c there will be an increase in its relativistic mass, but what effect does motion of a charged particle have on the magnitude of its electric field (Couloumb force). From what I know at...

"Accelerated charges radiate." That much-repeated phrase is the extent of my familiarity with radiating charges, though I am trying to bring myself up to speed on the Abraham-Lorentz-Dirac force. Well, in relativity theory gravity is locally equivalent to an accelerating frame. so if we...

A charged particle moving through a uniform magnetic field experiences a force perpendicular to the direction of motion due to the magnetic field created around the charged particle. I would like to know if the particle were stationary and a uniform magnetic field moved past it would the nature...

Homework Statement A magnet produces a 0.40 T field between its poles, directed horizontally to the east. A dust particle with charge q = -8.0×10^-18 C is moving vertically downwards with a speed of 0.30 cm/s in this field. Whilst it is in the magnetic field, the dust particle is also in an...

I would appreciate any insight into these questions; I have had a little EM but no general relativity. Maybe general relativity is not involved at all - just EM with an observer in an accelerated frame. 1. Suppose we have two charged particles Q1 and Q2. Q1 is sitting on our lab table. Q2...

Homework Statement Two identical charged particles moving with the same speed enter a region of uniform magnetic field. If one of these enters normal to the field direction, and the other enters at an angle of 30 degrees with the field, what would be the ratio of their angular frequencies...

Homework Statement An electron of kinetic energy 1.20keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 25.0cm. Find a.) The electron's speed. b.) the magnetic field magnitude c.)the circling frequency, and d) the period of the motion. Homework Equations...

if an electron is accelerated by 2eV energy. then what will be the wavelength of emw produced? can we use E=hc/wavelength here? should we use always de broglie hypothesis for this? what will be the difference between wavelength of electron and wavelength of emw? are they same or not?

Homework Statement Assuming the particle in Figure P24.62 is positively charged, what are the directions of the forces due to the electric field and to the magnetic field? a. The force due to the electric field is directed up (toward the top of the page); the force due to the magnetic field...

What is the appropriate way to model the magnetic field of a moving charged point particle? I don't believe you can use Biot-Savart because it is not a steady current. I am trying to figure out what EMF (current) would be induced in a square or round conducting loop when a charged point...

Homework Statement A positively charged particle (9.35pC) is suspended in equilibrium in an electric field between two horizontal parallel plates with opposite charges. Each one of the square plates has a charge of 5.5x10^-5C; and are separated by 6.25mm and their sides are 11cm long what is...

Homework Statement If the magnetic field of the wire is 2.5×10^−4 and the electron moves at 1.0×10^7 , what is the magnitude of the force exerted on the electron? Homework Equations F=qvBsin(theta) The Attempt at a Solution Sin(theta) = sin90 = 1 q = -1 v = 1e7 B = 2.5e-4 So...

[b]1. A 1.56024 μC charged particle with a kinetic energy of 0.115905 J is placed in a uniform magnetic field of magnitude 0.150267 T. If the particle moves in a circular path of radius 3.13685 m, find its mass. Answer in units of kg. Homework Equations Fe= Fm Fe= qE KE=mv^2/2 Fm=...

[b]1. A 1.56024 μC charged particle with a kinetic energy of 0.115905 J is placed in a uniform magnetic field of magnitude 0.150267 T. If the particle moves in a circular path of radius 3.13685 m, find its mass. Answer in units of kg. Homework Equations Fe= Fm Fe= qE KE=mv^2/2 Fm=...

Homework Statement A proton moves at 4.50 x 108 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 9.60 x 103 N/C. Ignoring any gravitational effects, find (a) the time interval required for the proton to move 5.00 cm horizontally, (b) its vertical...

Homework Statement A particle of charge q = e moves in a circle of radius = 0.44 m with speed v = 2.350×107 m/s. Treating the circular path as a current loop with constant current equal to its average current, find the maximum torque exerted on the loop by a uniform magnetic field of magnitude...

Homework Statement A charged particle with a charge-to-mass ratio of 5.7 x 10^8 C/kg travels on a circular path that is perpendicular to a magnetic field whose strength is .72 T. How much time does it take for the particle to make one revolution? Homework Equations (Magnetic)F = qvB...

Homework Statement Stumped on this one. A charged particle hurles through space creatings its own magnetic field, if it strikes the Earth's equator, the 2 magnetic fields interact and... a) do not affect the particles direction b) change the particles speed but not direction c)...

Homework Statement A ring of diameter 7.90 cm is fixed in place and carries a charge of 5.90 \muC uniformly spread over its circumference. How much work does it take to move a tiny 3.80 \muC charged ball of mass 1.90 g from very far away to the center of the ring? Also, What is the...

changing kinetic E of charged particle in magnetic field -- Halbach array hi, I read somewhere that you can't change a charged particle's (we'll say electron) kinetic energy with a strong magnetic field, that you only change the electron's direction. I'm assuming a frictionless environment...

Imagine a charged particle moving in vacuum with relativistic velocity. It emits electromagnetic wave with some known energy. This energy can be detected and used somewhere else. I guess this energy should come from particle’s kinetic energy, thus particle should slowly decelerate over time...

how much force, if at all. is required to make a particle enter an electric field perpendicularly... eg, to let a charged particle enter a charged capacitor perpendicularly, is external force required??

Homework Statement an isotope separator is used to separate charged particles having different masses. assume that two types of particles enter a region of constant magnetic field with the same kinetic energy, and assume that all particles have the same charge. the radius of the circular...

Homework Statement A charged particle is moving in a uniform magnetic field. Which of the following statements concerning the magnetic force exerted on the particle is false? A) It increases the speed of the particle. B) It does no work on the particle. C) It changes the velocity of...

Hello. Sir My question is that:Why magnetic field deflects a charge particle or a charged particle experiences a force in a magnetic field?Ok In electric field between two parallel plates a +ve charge particle deflects towards -ve plate when it is thrown perpandicularly. But in magnetic...

At the moment I'm trying to figure out charged particle in electric field behavior and there's a type of question that seems to be confusing me lots. Ok, here's such a question that I'm not sure about: A virus rests on the bottom plate of oppositely charged parallel plates in the vacuum...

[SOLVED] Kinetic Energy of Charged Particle Homework Statement Particles A (of mass m and charge Q) and B (of m and charge 5Q) are released from rest with the distance between them equal to 0.9976 m. If Q=33e-6 C, what is the kinetic energy of particle B at the instant when the particles are...

Homework Statement A charged particle is moving in a uniform, constant magnetic field. Which one of the following statements concerning the magnetic force exerted on the particle is false? It changes the velocity of the particle. It increases the speed of the particle. It does not...

Homework Statement What is the acceleration of a charged particle in a uniform electric field? Assume the particle moves along a straight line parallel to the electric field. Show that a particle starting from rest at x=0 and t=0 the speed and position are given by the following formulas...

Homework Statement I really can't see where I am going wrong here. I would latex out my work, but it would take way too long, so I have scanned it in. It should be easy enough to read though. Its NUMBER 7, fig 21-22 Also the blurr says '100 nC' The Attempt at a Solution

Hi, So in order to earn a few crucial points back from my teacher I need to prove that a magnetic field can increase the speed of a charged particle. I've made a list of a couple methods so far (see examples below) but am hoping that you all could help me think of a few more. Now I know...

Homework Statement Determine the force in z-direction on the gyrocenter of a charged particle in a diverging magnetic field. \frac{\partial B}{\partial z} < 0 Homework Equations The Attempt at a Solution Please give me a starter. Could I use the Lorentz force in this case?

Hey I have a question that was almost completely answered in this thread: https://www.physicsforums.com/showthread.php?t=116098 Specifically someone interpreted his question to be how exactly do you get that the term in the Lagrangian corresponding to the magnetic potential is...

Homework Statement A positively charged particle of mass 3.0 X 10 ^-12 kg and charge +6.4 X 10^-5 C is perpendicular to a 1.5 T magnetic field. If the particle has a speed of 4.8 X 10^3 m/s, the acceleration of the particle...? Homework Equations e = kg / r^2 qB = mv / r The...

In one dimension, the motion of a charged particle (q1) will be [assume q2 is stationary] \frac{d^2 x}{d t^2} =\frac{Kq_1q_2}{m x^2} Is there a solution to this differential equation?

Can anyone refer me to some webpages where elementary matrix treatment to charged beam kinematics and optics can be found?I am working on this myself and need to refer to some papers. the problem is that I cannot access this from my home.Please help...

A charged particle of mass m is attracted by a central force with magnitude F = \frac{k}{r^2} . Find the Hamiltonian of the particle. I'm just wondering if I did this correctly because it seemed too easy. First I used the fact that -dU/dr = F = k/r^2, so the potential (with infinite...

Homework Statement Consider the mass spectrometer shown schematically in Figure P19.30. The electric field between the plates of the velocity selector is 850 V/m, and the magnetic fields in both the velocity selector and the deflection chamber have magnitudes of 0.910 T. Calculate the radius...

If a "charged particle" is free falling in the gravitational field---------- If a "charged particle" is free falling in the earth`s gravitational field, it will emit electromagnetic waves? (1)If a person stands on the ground, he will say:Yes ! because,the charged particle is accelerated by...

How much are we justified in applying Newton's 2nd law in predicting trajectories of a single charged particle?What will be the answer for a number of charges?Of course, we have cyclotron motion at hand, but still...as we know, sub atomic level physics needs quantum mechanical consideration and...

When a charged particle moves at an angle of 13° with respect to a magnetic field, it experiences a magnetic force of magnitude F. At what angle (less than 90°) with respect to this field will this particle, moving at the same speed, experience a magnetic force of magnitude 2.4F?

When two current carrying wires are place beside each other they are are either attracted or repelled by the magnetic fileds generated and these fields are just electrostatic forces caused by the relativistic effect. Why does a stationary charged particle not feel this force from a single...

OK first off here is the problem. problem: A positive point charge q of mass m is injected with a velocity u_0 = \mu_0 j into the y > 0 region where a uniform magnetic field B = B_0 i exists. Obtain the equation of motion of the charge, and describe the path that the charge follows. i, j and k...

Hello everyone, I have a concept problem I am having a problem understanding Assume the Earth's magnetic dipole moment is aligned with the Earth's rotational axis, and the Earth's magnetic field is cylindrically symmetric. If i have a proton traveling in orbit to the Earth at a height of...

can one harness the energy from a charged particle violently oscillating in a confined space.

A magnetic field has a magnitude of 1.2*10^-3 T, and an electric field has a magnitude of 5.4*10^3 N/C. Both fields point in the same direction. A positive 1.8*10^-6 C charge moves at a speed of 3.6*10^6 m/s in a direction that is perpendicular to both fields. Determine the magnitude of the net...

In the attached figure (also at http://img215.imageshack.us/img215/3231/lorentz5sa.png" ) is a positively charged particle entering a magnetic field that points out of the page. The velocity of the particle is in the upward direction, orthogonal to the magnetic field. My only question is...

This one is from Griffiths. A toughie! A point charge q of mass m is released at a distance d from an infinite grounded conducting plane. How long will it take for the charge to hit the plane? I chose a distance 'x' as a height above the plane. So the force on 'q' is given by: F = {-1\over...

A particle of mass 73 g and charge 38muC is released from rest when it is 46 cm from a second particle of charge -17muC. Determine the magnitude of the initial ac- celeration of the 73 g particle. Answer in units of m/s^2. Well, I used this formula: k [(q1 * q2) / mr^2)]...

Hi I need help finding what the acceleration is for the following problem: A particle with a mass of 1.81x10(-3) kg and a charge of 1.22 x 10(-8) C has at a given instant a velocity v=(3.11 x 10(4) m/s)j. What are the magnitude and direction of the particle's acceleration produced by a uniform...