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A metal disc of radius 100 cm is rotated...

A metal disc of radius 100 cm is rotated at a constant angular speed of `60 rad//s` in a plane at right angles to an external field of magnetic induction `0.05 Wb//m^(2)`. The emf induced between the centre and a point on the rim will be

A

3 V

B

1.5 V

C

6 V

D

9 V

Text Solution

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Knowledge Check

  • A metal disc of radius 100 cm is rotated at a constant angular speed of 60 rads^(-1) in a plane at right angles to an external field of magnetic induction 0.05 wbm^(-2) The emf induced between the centre and a point on the rim will be

    A
    3 V
    B
    1.5 V
    C
    6 V
    D
    9 V

  • A metal disc of radius 100 cm is rotated at a constant angular speed of 60 rads^(-1) in a plane at right angles to an external field of magnetic induction 0.05 wbm^(-2) The emf induced between the centre and a point on the rim will be

    A
    3 V
    B
    1.5 V
    C
    6 V
    D
    9 V

  • A metal disc of radius 200cm is rotated at a constant angular speed of 60 rad s^(-1) in a plane at right angles to an external field of magnetic induction of 0.05 wbm^(-2) . Find the emf induced between the center and a point on the rim?

    A
    12 V
    B
    8 V
    C
    2V
    D
    6 V
    • DISHA-ELECTROMAGNETIC INDUCTION-PHYSICS
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    9. Which of the following figure correctly depicts the Lenz’s law. The ar...

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    12. When the current changes from +2 A to –2A in 0.05 second, an e.m.f. of...

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