Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Magnetics question

2020 · 6 Sep · Shift 1 · Q49
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Magnetics
  5. /2020 · 6 Sep · Shift 1 · Q49

Magnetics question

2020 · 6 Sep · Shift 1 · Q49

JEE MainPhysicsMagneticsMCQ+4 / −1
An electron is moving along +x direction with a velocity of 6 ×\times× 106 ms–1. It enters a region of uniform electric field of 300 V/cm pointing along +y direction. The magnitude and direction of the magnetic field set up in this region such that the electron keeps moving along the x direction will be :
  1. A
    3 ×\times× 10–4 T, along –z direction
  2. B
    5 ×\times× 10–3 T, along –z direction
  3. C
    5 ×\times× 10–3 T, along +z direction
  4. D
    3 ×\times× 10–4 T, along +z direction
PreviousNext

More from Magnetics

  • A square loop of side 2 a and carrying current I is kept in xz plane with its centre at origin. A long wire carrying the same current I is placed parallel to z-axis and passing through point (0, b, 0), (b >> a). The magnitude of…2020 · MCQ
  • A charged particle going around in a circle can be considered to be a current loop. A particle of mass m carrying charge q is moving in a plane with speed v under the influence of magnetic field B. The magnetic moment of…2020 · MCQ
  • A particle of mass m and charge q has an initial velocity v=v0​j​. If an electric field E=E0​i and magnetic field B=B0​i act on the particle, its…2020 · MCQ
  • Photon with kinetic energy of 1MeV moves from south to north. It gets an acceleration of 1012 m/s2 by an applied magnetic field (west to east). The value of magnetic field : (Rest mass of proton is 1.6 × 10–27 kg) :2020 · MCQ
  • A very long wire ABDMNDC is shown in figure carrying current I. AB and BC parts are straight, long and at right angle. At D wire forms a circular turn DMND of radius R. AB, BC parts are tangential to circular turn at N and D. Magnetic… Includes diagram2020 · MCQ
  • A charged particle of mass 'm' and charge 'q' moving under the influence of uniform electric field Ei and a uniform magnetic field Bk follows a trajectory from point P to Q as shown in figure. The… Includes diagram2020 · MCQ
  • A long, straight wire of radius a carries a current distributed uniformly over its cross-section. The ratio of the magnetic fields due to the wire at distance 3a​ and 2 a, respectively from the axis of the wire is :2020 · MCQ
  • An electron gun is placed inside a long solenoid of radius R on its axis. The solenoid has n turns/length and carries a current I. The electron gun shoots an electron along the radius of the solenoid with speed v. If the electron does not… Includes diagram2020 · MCQ