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  • Need explanation for: A boat is moving due east in a region where the earth’s magnetic field is 5.0 × 10-5 N A-1 m-1 due north and horizontal. The boat carries a vertical aerial 2 m long. If the speed of the boat is 1.50 m s-1 , the magni

A boat is moving due east in a region where the earth’s magnetic field is 5.0 × 10-5 N A-1 m-1 due north and horizontal. The boat carries a vertical aerial 2 m long. If the speed of the boat is 1.50 m s-1 , the magnitude of the induced emf in the wire of aerial is

  • Option 1)

    1 mV

  • Option 2)

    0.75 mV

  • Option 3)

    0.50 mV

  • Option 4)

    0.15 mV

 

Answers (1)

best_answer

As we learnt in 

Velocity is perpendicular to magnetic field hence

\xi =Bl\vartheta

=5\times 10^{-5}\times 2\times 1.5\:V

=0.15m\:V


Option 1)

1 mV

This option is incorrect

Option 2)

0.75 mV

This option is incorrect

Option 3)

0.50 mV

This option is incorrect

Option 4)

0.15 mV

This option is correct

Posted by

prateek

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