Home
Class 12
PHYSICS
A electron moves through a uniform magne...

A electron moves through a uniform magnetic field given by `vec(B)=B_(x) hat(i)+(3B_(x))hat(j)`. At a particular instant, the electron has the velocity `vec(v)=(2.0 hat(i) +4.0 hat(j))m//s` and magnetic force acting on it is `(6.4 xx 10^(-19)N)hat(k)`. Find `B_(x)`.

Text Solution

Verified by Experts

The correct Answer is:
`[B_(x)-2.0 T]`
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECTS OF CURRENT AND MAGNETISM

    PHYSICS GALAXY - ASHISH ARORA|Exercise Advance MCQ|29 Videos

  • Kinetic Theory of Gases and Gas Laws

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Problems for Preparation of NSEP, INPhO & IPhO|64 Videos

  • NUCLEAR PHYSICS AND RADIOACTIVITY

    PHYSICS GALAXY - ASHISH ARORA|Exercise Concptual MCQs|48 Videos

Similar Questions

Explore conceptually related problems

An electron moves with velocity vec(v) = ak In a magnetic field of intensity vec(B) = b hat(i) + c hat(j) . Find the magnetic force on the electron.

An electron enters an electric field having intensity vec(E )= (3 hat(i) + 6hat(j) +2 hat(k)) Vm^(-1) and magnetic field having induction vec(B)= (2 hat(i) + 3hat(j)) T with a velocity vec(V)= (2 hat(i) + 3hat(j)) ms^(-1) . The magnitude of the force acting on the electron is (Given e= -1.6 xx 10^(-19)C )

An electron of charge -e , mass m, enters a uniform magnetic field vec(B)= B hat(i) with an initial velocity vec(v) = v_(x) hat(i) + v_(y) hat(j) . What is the velocity of the electron after a time interval of t seconds?

A charged particle with charge to mass ratio ((q)/(m)) = (10)^(3)/(19) Ckg^(-1) enters a uniform magnetic field vec(B) = 20 hat(i) + 30 hat(j) + 50 hat(k) T at time t = 0 with velocity vec(V) = (20 hat(i) + 50 hat(j) + 30 hat(k)) m//s . Assume that magnetic field exists in large space. During the further motion of the particle in the magnetic field, the angle between the magnetic field and velocity of the particle

A proton travels through uniform magnetic and electric tric fields. The magnetic field is vec(B) = -3.25 hat(i) mT . At one instant the velocity of the proton is vec(v) = 2000 hat(j) m//s . At that instant and in unit-vector notation. What is the net force acting on the proton if the electric field is (a) 4.00 hat(k) V/m, (b) -4.00 hat(k) V/m, and (c) 4.00 hat(i) V/m ?

An alpha particle moving with a velocity vec(v)_(1)=2hat(i)m//s is a uniform magnetic field experiences a force vec(F)_(1)=-4e(hat(j)-hat(k))N . When the particle moves with a velocity vec(v)_(2)=hat(j)m//s , then the force experienced by it is vec(F)_(2)=2e(hat(i)-hat(k))N . The magnetic induction vec(B) at that point is :

A charged particle moves with velocity vec v = a hat i + d hat j in a magnetic field vec B = A hat i + D hat j. The force acting on the particle has magnitude F. Then,

An alpha particle moving with the velocity vec v = u hat i + hat j ,in a uniform magnetic field vec B = B hat k . Magnetic force on alpha particle is

A charge particles q enters in a magnetic field vec(B)=y hat(i) + x hat (j) with the velocity vec(v)= x hat (i) y hat (j) . Neglect any force other than magnetic force. Now answer the following question. Magnetic force F acting on charge is proportional to –

PHYSICS GALAXY - ASHISH ARORA-MAGNETIC EFFECTS OF CURRENT AND MAGNETISM-U.N.P
  1. Uniform electrlc and magnetic fields with strength E and B are directe...

    Text Solution

    |

  2. A particle of mass m and charge + q is projected from origin with velo...

    Text Solution

    |

  3. A electron moves through a uniform magnetic field given by vec(B)=B(x)...

    Text Solution

    |

  4. A neutral particle is at rest in a uniform magnetic field B. At time t...

    Text Solution

    |

  5. Each of the lettered points at the corners of the cube as shown in Fig...

    Text Solution

    |

  6. A proton of charge e and mass m enters a uniform magnetic field B = Bi...

    Text Solution

    |

  7. A thin, 50.0 cm long metal bar with mass 750 g rests on, but is not at...

    Text Solution

    |

  8. In figure, the cube is 40.0 cm on each edge. Four straight segments of...

    Text Solution

    |

  9. A length L of wire carries a current i. Show that if the wire is forme...

    Text Solution

    |

  10. A coil with magnetic moment 1.45 A -m^2 is oriented initially with its...

    Text Solution

    |

  11. A current I = sqrt2 A flows in a circuit having the shape of isosceles...

    Text Solution

    |

  12. Find the magnetic field B at the point P in figure

    Text Solution

    |

  13. A wire carrying current i has the configuration as shown in figure. Tw...

    Text Solution

    |

  14. A closely wound coil has a radius of 6.00 cm and carries a current of ...

    Text Solution

    |

  15. A closed cure encircles several conductors. The line integral intB.dI ...

    Text Solution

    |

  16. A long cylindrical conductor of radius a has two cylindrical cavities ...

    Text Solution

    |

  17. Two infinite plates shown in cross-section in figure carry lamda ampe...

    Text Solution

    |

  18. A long horizontal wire AB, which is free to move in a vertical plane a...

    Text Solution

    |

  19. A magnet of length 0.1 m and pole strength 10^(-4) A.m. is kept in a m...

    Text Solution

    |

  20. The force experienced by a pole of strength 100 Am at a distance of 0....

    Text Solution

    |