# What is the electric field magnitude in the velocity selector_

It’s also worth noting that the magnitude of v is always less than the magnitude of the unit vector u (because we have taken units of space and time such that c = 1), so the sign of the electric field (with a = 0) is always positive for any velocity v, positive or negative. Velocity selector is also known as Wien filter is a device with a perpendicular arrangement of electric and magnetic fields which is used as a velocity filter for charged particles. Velocity selector exploits the principle of motion of a charge in a uniform magnetic field .Ions in the beam emerge from the velocity selector at a speed of 3.00 x 105 m/s and enter a uniform magnetic field of 0.600 T directed perpendicularly to the velocity of the ions. Q : Problem related to magnitude of the vehicles velocity In the Bainbridge mass spectrometer (Figure 1), the magnetic-field magnitude in the velocity selector is 0.510 T, and ions having a speed of 1.82×106m/s pass through undeflected. A) What is the electric-field magnitude in the velocity selector? b) If the separation of the plates is 5.20mm, what is the potential difference between the plates?The first step to solving for the magnitude of the electric field is to convert the distance from the charge to meters: r = 1.000 mm. r = 0.001000 m. The magnitude of the electric field can be found using the formula: The electric field 1.000 mm from the point charge has a magnitude of 0.008639 N/C, and is directed away from the charge. horizontally. We shoot the elevator and you horizontally. If we picked a low velocity (e.g. 2 km/sec) you and the elevator would curve towards the Earth, and you would crash into it, as in path A in the figure below. But instead we pick a high velocity: 8 km/sec. You and the elevator are shot from the gun, and you curve towards the Earth, but ... Wave Interference - PhET Interactive Simulations Velocity Selector. A velocity selector is a region of space occupied by a uniform electric and magnetic field mutually perpendicular. When a beam of charged particles travels perpendicular through ...E = k * Q / r². where. E is the magnitude of electric field, Q is the charge point, r is the distance from the point, k is the Coulomb's constant k = 1/ (4 * π * ɛ0) = 8.9876 * 10^9 N * m² / C². You can check with our electric field calculator that the magnitude of the electric field decreases rapidly as the distance from the charge point increases. Charged particles pass through a velocity selector with electric and magnetic fields at right angles to each other, as shown in FIGURE $22-42$ . If the electric field has a magnitude of 450 $\mathrm{N} / \mathrm{C}$ and the magnetic field has a magnitude of 0.18 $\mathrm{T}$ , what speed must the par-The electric field in a region is pointed away from the -axis and the magnitude depends upon the distance from the axis. The magnitude of the electric field is given as where is a constant. Find the potential difference between points and explicitly stating the path over which you conduct the integration for the line integral. 21.3 The Motion of a Charged Particle in a Magnetic Field Example: Velocity Selector A velocity selector is a device for measuring the velocity of a charged particle. The device operates by applying electric and magnetic forces to the particle in such a way that these forces balance. Given B and q, wow should an electric field be 21.79 –(cont.) A proton is projected perpendicularly into a magnetic field that has a magnitude of 0.50 T. The field is then adjusted so that an electron will follow the exact same circular path when it is projected perpendicularly into the field with the same velocity that the proton had. What must be the magnitude of the electric field so that the particle is not deflected if the magnitude of its velocity is 2.0×10 5 cm/s? A) 1.2 v/m B) 3.3 × 10-11 v/m C) 1.2 × 10-2 v/m D) 3.3 × 10 10 v/m E) 120 v/m Solution - Explanations. On entering the area with the electric and magnetic fields, two forces are exerted on the particle. Velocity Selector (VelocitySelector.exe). A velocity selector is a region in which there is a uniform electric field and a uniform magnetic field. The fields are perpendicular to one another, and perpendicular to the initial velocity of the charged particles that are passing through the region. A charged particle moves through a velocity selector at constant velocity. In the selector, E = 1.0 × 10 4 N/C 1.0 × 10 4 N/C and B = 0.250 T. When the electric field is turned off, the charged particle travels in a circular path of radius 3.33 mm. Determine the charge-to-mass ratio of the particle. Answer: Explanation: The formula for the potential energy of a dipole placed in an electric field is given by. U = - pE Cos θ. where, θ is the angle between dipole moment and the electric field vector. For θ = 0°, initial potential energy, Ui = - pE. For θ = 180°, final potential energy, Uf = - pE Cos 180 = pE. Question: (a) A velocity selector consists of electric and magnetic fields described by the expressions E = E and B = B ĵ, with B = 10.0 mT. Find the value of E (in kV/m) such that a 740 eV electron moving in the negative x-direction is undeflected. kV/m (b) What If? In the Bainbridge mass spectrometer (see Figure 27.24 in the textbook), the magnetic-field magnitude in the velocity selector is 0.650 T, and ions having a speed of 1.82*10^6 m/s pass through undeflected. Part A What is the electric-field magnitude in the velocity selector?The direction of an electrical field at a point is the same as the direction of the electrical force acting on a positive test charge at that point. For example, if you place a positive test charge in an electric field and the charge moves to the right, you know the direction of the electric field in that region points to the right.

The current must be 320 downward and to the left. I F lB sin 4 x 10-3 N ; (0.24 m)(0.44 T)sin 320 410 I = 71.5 mA B Physics, 6th Edition Chapter 29. The Magnetism and the Magnetic Field *29-32. A velocity selector is a device (Fig. 29-26) that utilizes crossed E and B fields to select ions of only one velocity v.

A velocity selector in a mass spectrometer uses a 0.100-T magnetic field. a. What electric field strength is needed to select a speed of .4 00 106 m/s? b. What is the voltage between the plates if they are separated by 1.00 cm? Solution a. The velocity selector has both an electric field and a magnetic field, perpendicular to one another ...

Electric potential energy: energy of a charged body in an electrical field. Electromagnet: device that uses an electric current to produce a concentrated magnetic field. Electromagnetic force: one of fundamental forces due to electric charges, both static and moving.

Velocity Selector. A velocity selector is a region of space occupied by a uniform electric and magnetic field mutually perpendicular. When a beam of charged particles travels perpendicular through ...

A Velocity Selector Has A Magnetic Field Of Magnitude 4.0 And An Electric Field Of Magnitude 105 N/C. What Is The Speed Vo Of The Charged Particle That Emerge Undeflected From The Velocity Selector? A) 4x10 M/s B 2.5x10* M/s с 0 D 4.0x10m/sThe velocity selector in Figure 22–37is designed to allow charged particles with a speed of 45 10./×3m s to pass through undeflected. Find the direction and magnitude of the required electric field, given that the magnetic field has a magnitude of 0.96 T.