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For an L shaped conducting rod placed in...

For an L shaped conducting rod placed in an uniform magnetic field `vecB` rotating with constant angular velocity `omega` about an axis passing through one of its ends A and normal to the plane of the conductor induced emf

A

across AC equals `omega B l_(1)^(2)`

B

across AC equals `(1)/(2) omega B l_(1)^(2) `

C

across BC equals zero

D

None of the above is correct

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • For the L shaped conductor in a uniform magnetic field B shown in figure the emf across its ends when it rotates with angular velocity omega about an axis through one its ends O and normal to its plane will be

    A
    `2 Bomega l^(2)`
    B
    `B omega l^(2)`
    C
    `(1)/(2) B omega l^(2)`
    D
    `4 B omega l^(2)`

  • A rectangular coil of single trun, having area A , rotates in a uniform magnetic field B with an angular velocity omega about an axis prependicular to the field. If initially the plane of the coil is perpendicular to the field, then the average induced emf when it has rotate through 90^(@) is

    A
    `(omegaBA)/(pi)`
    B
    `(omegaBA)/(2pi)`
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  • When a 'j' shaped conducting rod is rotating in its own plane with constant angular velocity omega about one of its ends P in a uniform magnetic field rarr B ( directed normally into the plane of paper ) the magnitude of emf induced across it will be

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