मराठी

An electron is moving along positive x-axis in a magnetic field which is parallel to the positive y-axis. In what direction will the magnetic force be acting on the electron? - Physics

Advertisements
Advertisements

प्रश्न

An electron is moving along positive x-axis in a magnetic field which is parallel to the positive y-axis. In what direction will the magnetic force be acting on the electron?

पर्याय

  • Along -x axis

  • Along -z axis

  • Along +z axis

  • Along -y axis

MCQ

उत्तर

Along -z axis

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2023-2024 (March) Board Sample Paper

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

A particle with charge q moves with a velocity v in a direction perpendicular to the directions of uniform electric and magnetic fields, E and B respectively, which are mutually perpendicular to each other. Which one of the following gives the condition for which the particle moves undeflected in its original trajectory?


If a particle of charge 1012 coulomb moving along the `hat"x" -` direction with a velocity 102 m/s experiences a force of 1 o-s newton in `hat"y" -` direction due to magnetic field, then the minimum magnetic field is ____________.


For a circular coil of radius R and N turns carrying current I, the magnitude of the magnetic field at a point on its axis at a distance x from its centre is given by,

B = `(μ_0"IR"^2"N")/(2("x"^2 + "R"^2)^(3/2))`

(a) Show that this reduces to the familiar result for field at the centre of the coil.

(b) Consider two parallel co-axial circular coils of equal radius R, and number of turns N, carrying equal currents in the same direction, and separated by a distance R. Show that the field on the axis around the mid-point between the coils is uniform over a distance that is small as compared to R, and is given by, B = `0.72 (μ_0"NI")/"R"` approximately.

[Such an arrangement to produce a nearly uniform magnetic field over a small region is known as Helmholtz coils.]


A charged particle enters an environment of a strong and non-uniform magnetic field varying from point to point both in magnitude and direction, and comes out of it following a complicated trajectory. Would its final speed equal the initial speed if it suffered no collisions with the environment?


A charge q is moving with a velocity v parallel to a magnetic field B. Force on the charge due to magnetic field is ______.

What is the magnetic induction of the field at the point O in a current I carrying wire that has the shape shown in the figure? The radius of the curved part of the wire is R, the linear parts are assumed to be very long.


An infinitely long straight conductor carries a current of 5 A as shown. An electron is moving with a speed of 105 m/s parallel to the conductor. The perpendicular distance between the electron and the conductor is 20 cm at an instant. Calculate the magnitude of the force experienced by the electron at that instant.


In the product

`overset(->)("F") = "q"(overset(->)(υ) xx overset(->)("B"))`

= `"q"overset(->)(υ) xx ("B"overset(^)("i") + "B" overset(^)("j") + "B"_0overset(^)("k"))`

For q = 1 and `overset(->)(υ) = 2overset(^)("i") + 4overset(^)("j") + 6overset(^)("k")` and

`overset(->)("F") = 4overset(^)("i") - 20overset(^)("j") + 12overset(^)("k")`

What will be the complete expression for `overset(->)("B")`?


An electron enters with a velocity v = v0i into a cubical region (faces parallel to coordinate planes) in which there are uniform electric and magnetic fields. The orbit of the electron is found to spiral down inside the cube in plane parallel to the x-y plane. Suggest a configuration of fields E and B that can lead to it.


State dimensions of magnetic field.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×