Home
Class 12
PHYSICS
A wire loop confined in a plane is rotat...

A wire loop confined in a plane is rotated in its oen plane with some angular velocity. A uniform magnetic field exists in the region. Fid the emf induced in the loop.

Text Solution

Verified by Experts

`i=V(Bxxl)`
`=vvBl. Cos theta`
`theta is the angle between normal to plane and B which is 90^(@)`
`Hence emf induced = 90^(@).`
`so, i=vBl cos 90^(@)=0.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    HC VERMA|Exercise Exercises|89 Videos

  • ELECTRIC FIELD AND POTENTIAL

    HC VERMA|Exercise Exercises|75 Videos

  • ELECTROMAGNETIC WAVES

    HC VERMA|Exercise Exercises|9 Videos

Similar Questions

Explore conceptually related problems

A circular loop enters a uniform magnetic field as shown in the figure. The current induced in the coil ____

A coil of area A is placed in the X-Y plane. A uniform magnetic field B_0hati established. The emf induced in the coil is ____

A uniform rod of mass m and length l rotates in a horizontal plane with an angular velocity omega about a vertical axis passing through one end. The tension in the rod at a distance x from the axis is

A wheel having n conducting concentric spokes is rotating about it geometrical axis with an angular velocity omega , in a uniform magnetic field B perpendicular to its plane prove that the induced emf generated between the rim of the wheel and the center is (omegaBR^2)/2 , where R is the radius of the wheel. It is given that the rim of the wheel is conducting.

A wheel of radius r having conducting rim and n no. of conducting spokes, rotates in a plane perpendicular to uniform magnetic field B with constant angular speed omega . Prove that emf induced between centre and rim of a wheel is 1/2BomegaR^2

A coil having 10 Am^2 magnetic moment is placed in a vertical plane & is free to rotate about its horizontal axis coincides with its diameter. A uniform magnetic field of 2T in the horizontal direction exists such that initially the axis of the coil is in the direction of the field. The coil rotates through an angle of 90^@ under the influence of magnetic field. The moment of Inertia of coil is 0.1 kg m^2 . What will be its angular speed?

One metallic ring of radius 1 m has a conducting rod connected between centre and rim of wheel. It rotates in a plane perpendicular to uniform magnetic field 2 T with frequency 100"rev"/s . Find emf induced across the rod.

One metallic ring of radius 2 m has a conducting rod connected between centre and rim of wheel. It rotates in a plane perpendicular to uniform magnetic field 1 T with frequency 25"rev"/s . Find emf induced across the rod.

A wheel of radius 2m having 8 conducting concentric spokes is rotating about its geometrical axis with an angular velocity of 10 rad/s in a uniform magnetic field of 0.2T perpendicular to its plane. The value of induced emf between the rim of the wheel and centre is ......... V