Home
Class 12
PHYSICS
A negative test charge is moving mear a ...

A negative test charge is moving mear a long straight wire carrying a current. The force acting on the test charge is parallel to the direction of the current. The motion of the charge is:

A

away from the wire

B

towards the wire

C

parallel to the wire along the current

D

parallel to the wrie opposite to the current

Text Solution

Verified by Experts

The correct Answer is:
B
The force is parallel to the direction of current in magnetic field,
hence `F = q(vxxvecB)`
According to Fleming.s left hand rule,
we have, the direction of motion of charge is towards the wire.
Promotional Banner

Topper's Solved these Questions

  • MOVING CHARGES AND MAGNETISM

    DISHA PUBLICATION|Exercise EXERCISE - 1 : Concept Builder (Topic wise) (Topic 1 : Motion of Charged Particle in Magnetic Field )|26 Videos

  • MOVING CHARGES AND MAGNETISM

    DISHA PUBLICATION|Exercise EXERCISE - 1 : Concept Builder (Topic wise) (Topic 2 : Magnetic Field Lines, Biot - Savart.s Law and Ampere.s Circuital Law|21 Videos

  • MOTION IN A STRAIGHT LINE

    DISHA PUBLICATION|Exercise Exercise-2|30 Videos

  • NUCLEI

    DISHA PUBLICATION|Exercise EXERCISE - 2 (CONCEPT APPLICATOR)|30 Videos

Similar Questions

Explore conceptually related problems

A negative test charge is moving near a long straight wire carrying a current. The force acting on the test charge is parallel to the direction of the current. The motion of the charge is:

In the above question , the nature of motion of the test charge is

P, Q and R are long straight wires in air, carrying currents as shown. The force on Q is directed

A very long straight wire carries a current I. At the instant when a charge +Q at point P has velocity vecV , as shown, the force on the charge is

An electric charge q is moving with a velocity w in the direction of a magnetic field B. The magnetic force acting on the charge is

The figure shows a circular coil and a long straight wire AB placed close to each other, the wire being parallel to a diameter of coil. The arrows show directions of currents. The direction of magnetic force acting on AB is

A rectangular loop carrying a current i_(2) situated near a long straight wire carrying a steady current i_(1) . The wire is parallel to one of the sides of the loop and is in the plane of the loop as shown in the figure. Then the current loop will

A circular coil of wire carries a current . PQ is a part of very long wire carrying a current and passing close to the circular coil. If the direction of currents are those shown in figure, then the direction of the force acting on PQ is

DISHA PUBLICATION-MOVING CHARGES AND MAGNETISM -EXERCISE - 2 : Concept Applicator
  1. A negative test charge is moving mear a long straight wire carrying a ...

    Text Solution

    |

  2. A current of I ampere flows along an infinitely long straight thin wal...

    Text Solution

    |

  3. A long wire is bent into shape ABCDE as shown in fig., with BCD being ...

    Text Solution

    |

  4. Two particles X and Y having equal charge , after being accelerated th...

    Text Solution

    |

  5. In fig, what is the magnetic field induction at point O

    Text Solution

    |

  6. 3 A of current is flowing in a linear conductor having a length of 40 ...

    Text Solution

    |

  7. A conducting circular loop of radius r carries a constant current I. I...

    Text Solution

    |

  8. An electron traveling with a speed u along the positive x - axis enter...

    Text Solution

    |

  9. A cell is connected between two points of a uniformly thick circular c...

    Text Solution

    |

  10. An infinitely long wire carrying current I is along Y axis such that i...

    Text Solution

    |

  11. Two long parallel wires carry currents i(1) and i(2) such that i(1) g...

    Text Solution

    |

  12. A wire carrying current I has the shape as shown in adjoining figure. ...

    Text Solution

    |

  13. A long straight wire of radius a carries a steady current I. The curre...

    Text Solution

    |

  14. When a long wire carrying a steady current is best into a circular coi...

    Text Solution

    |

  15. Two concentric coils each of radius equal to 2 pi cm are placed at rig...

    Text Solution

    |

  16. A long solenoid has 200 turns per cm and carries a current i. The magn...

    Text Solution

    |

  17. A steady current is flowing in a circular coil of radius R, made up o...

    Text Solution

    |

  18. An otherwise infiniye, straight wire has two concentric loops of radii...

    Text Solution

    |

  19. Five very long, straight insulated wires are closely bound together to...

    Text Solution

    |

  20. A long straight wire along the z- axis carries a current I in the neg...

    Text Solution

    |

  21. The magnetic field at O due to current in the infinite wire forming a ...

    Text Solution

    |