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A infinitely long conductor AB lies alon...

A infinitely long conductor AB lies along the axis of a circular loop of radius R. If the current in the conductor AB varies at the rate of x ampere/scond, then the induced emf in the loop is

A

`(Ralpha)/(2rho)` from `A` to `B`

B

`(Ralpha)/(2rho)` from `B` to `A`

C

`(2Ralpha)/rho` from `A` to `B`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
The induced current in upper semicircular and lower semicircular will cancel each other in diameter `(AB)`.
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Knowledge Check

  • A infinitely long conductor AB lies along the axis of a circular loop of radius R. If the current in the conductor AB varies at the rate of x ampere/second, then the induced emf in the loop is

    A
    `(mu_(0)xR)/(2)`
    B
    `(mu_(0)xR)/(4)`
    C
    `(mu_(0)pixR)/(2)`
    D
    Zero

  • A long conductor AB lies along the axis of a circular loop of radius R. If the current in the conductor AB varies at the rate of 1 amphere/ second, then the induced emf in the loop is

    A
    `(mu_(0)IR)/(2)`
    B
    `(mu_(0)IR)/(4)`
    C
    `(mu_(0)piIR)/(2)`
    D
    zero

  • An infinite current-carrying conductor is placed along the z-axis and a wire loop is kept in the x-y plane. The current in the conductor is increasing with time. Then the

    A
    (a) emf induced in the wire loop is zero
    B
    (b) nagnetic flux passing through the wire loop is zero
    C
    (c ) emf induced is zero but magnetic flux is not zero
    D
    (d ) emf induced is not zero but magnetic flux is zero
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