Home
Class 12
PHYSICS
A charge of 1 coulumb is placed is one e...

A charge of `1` coulumb is placed is one end of a non-conducting rod of length `0.6m`.The rod is rotated in a vertical plane about a horizontal axis passing through the other end of the rod with an angular velocity `10^(4)pi rad//sec`.Find the magnetic field at a point on the axis of rotation of a distance of `0.8m` from the centre of the path is `Npixx10^(-4) T`,then find value of `N`.

Text Solution

Verified by Experts

`vecB=mu_(0)/(4pi) q((vecvxxvecr)/r^(3))`
`B=mu_(0)/(4pi)(qv)/((x^(2)+R^(2)))=(10^(-7)xx1xx0.6xx10^(4)pi)/1=6pixx10^(-4) T`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTRODYNAMICS

    RESONANCE|Exercise Exercise-2 PART-3|18 Videos

  • ELECTRODYNAMICS

    RESONANCE|Exercise Exercise-2 PART-3 COMPREHENSION-1|5 Videos

  • ELECTRODYNAMICS

    RESONANCE|Exercise Exercise-2 PART-1|15 Videos

  • ELECTRO MAGNETIC WAVES

    RESONANCE|Exercise Exercise 3|27 Videos

  • ELECTROMAGNETIC INDUCTION

    RESONANCE|Exercise A.l.P|19 Videos

Similar Questions

Explore conceptually related problems

A charge of 1C is placed at one end of a non conducting rod of length 0.6m . The rod is rotated in a vertical plane about a horizontal axis passing through the other end of the rod with angular frequency 10^(4)pi rad//s. Find the magnetic field at a point on the axis of rotation at a distance of 0.8m from the centre of the path.

A charge of 1 coul. is placed at one end of a non-conducting rod of length 0.6m. the rod is rotated in a vertical plane about a horizontal axis passing through the other end of the rod with angular frequency 10^(4) pi "radian/sec" . Find the magnetic field at a point on the axis ofrotation at a distance of 0.8 from the centre of the path. Now half of the charge is removed from one end and placed on the other end. The rod is rotated in a vertical plane about horizontal axis passing through the mid-point of the rod with the same angnlar frequency. Calculate the magnetic field at a point on the axis at a distance of 0.4m form the centre of the rod.

Knowledge Check

  • A uniform metal rod is rotated in horizontal plane about a vertical axis passing through its end at uniform rate. The tension in the rod is

    A
    same at all points
    B
    different at differen points and maximum at centre of rod
    C
    different at different points and minimum at axis of rotation.
    D
    different at different points and maximum at axis of rotation

  • Two balls of masses m and 2m are attached to the ends of a light rod of length L. The rod rotates with an angular speed omega about an axis passing through the centre of mass of system and perpendicular to the plane. Find the angular momentum of the system about the axis of rotation.

    A
    `(2)/(3) m omega L ^(2)`
    B
    `(1)/(3) omega ^(2) L m `
    C
    `(2)/(3) omega ^(2) L m`
    D
    `(1)/(3) L m`

  • A rod of length l is rotated with angular speed omega about an axis passing through the centre of rod and perpendicular to its length. A uniform magnetic field B is applied parallel to the axis of rotation, Potential difference developed between the ends of the rod is

    A
    `Bl(omega^(2))/(2)`
    B
    `Bl(omega^(2))`
    C
    `Bl(omega^(2))/(8)`
    D
    Zero

    • Similar Questions

    Explore conceptually related problems

    Two balls of masses m and 2m are attached to the ends of a light rod of length L . The rod rotates with an angular speed omega about an axis passing through the center of mass of system and perpendicular to the plane. Find the angular momentum of the system about the axis of rotation.

    A metal rod of length 15xx10^(-2)m rotates about an axis passing through one end with a uniform angular velocity of 60 rad s^(-1) . A uniform magnetic field of 0.1 Tesla exisits in the direction of the axis of rotationn. Calculate the EMF induced between the ends of the rod.

    A rod of mass 2 kg ad length 2 m is rotating about its one end O wth an angular velocity omega=4rad//s . Find angular momentum of the rod about the axis rotation.

    if rod is rotated about an axis passing through its mid-point , the potential difference between the ends of rod is

    A uniform rod of length l , mass m , cross-sectional area A and Young's modulus Y is rotated in horizontal plane about a fixed vertical axis passing through one end, with a constant angular velocity omega . Find the total extension in the rod due to the tension produced in the rod.

    Home
    Profile