Home
Class 12
PHYSICS
A boat is moving due east in a region wh...

A boat is moving due east in a region where the earth's magnetic field is `5.0xx10^(-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

A

0.75 mV

B

0.50 mV

C

0.15 mV

D

1 mV

Text Solution

Verified by Experts

The correct Answer is:
C
The induced emf,
`e=B_(H)lv=5xx10^(-5)xx2xx1.50=0.15mV`
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise VERY SHORT ANSWER TYPE QUESTIONS|12 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise SHORT ANSWER TYPE QUESTIONS - I|15 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise NCERT EXEMPLAR QUESTIONS WITH ANSWER HINT (MCQ-2)|4 Videos

  • ELECTRIC POTENTIAL

    CHHAYA PUBLICATION|Exercise CBSE Scanner|13 Videos

  • ELECTROMAGNETIC WAVES

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|17 Videos

Similar Questions

Explore conceptually related problems

A boat is moving at 25 m*s^(-1) . Power of the engine of the boat is 600 W . What is the resistance of water against the boat's motion ?

A 10m long horizontal wire, lying along the magnetic east-west direction, begins to fall with a velocity of 5.0 m. s^(-1) . What will be the emf induced in the wire? [Given, H=0.3xx10^(-4)Wb.m^(-2) ]

A long wire carries a current of 90 A in the east to west direction. What is the magnitude and direction of magnetic field due to the current I.5m below the line?

A rectangular wire loop of sides 8 cm and 2 cm with a small cut is moving out of a region of uniform magnetic field of magnitude 0.3 T directed normal to the loop. What is the emf developed across the cut if the velocity of the loop is 1 m. s^(-1) in a direction normal to the longer side

Due to the sunlight, if the amplitude of the electric field at the earth surface is 900 V . m^(-1) , then the amplitude of the magnetic field is nxx10^(-6) T. Find the value of n.

The intensity of magnetization of a bar magnet is 5.0 xx 10^4 A m^(-1) . The magnetic length and the area of cross section of the magnet are 12 cm and 1 cm^2 respectively. The magnitude of magnetic moment of this bar magnet is (in Si unit)

A wheel with 10 metallic spokes each 0.5 m long, is rotated with a speed of 120 rpm. Please of the wheel is normal to earth's magnetic field at that place. If the magnitude of the field is 0.40 G, what is the induced emf between the axle and rim of the wheel?

CHHAYA PUBLICATION-ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT-EXERCISE
  1. If the emf induced in an electrical circuit be e and the current induc...

    Text Solution

    |

  2. The magnetic flux across a coil, of 50 turns and of diameter 0.1 m, ch...

    Text Solution

    |

  3. A coil with a small area of 10^(-5)m^(2) is lying on the xy -plane aro...

    Text Solution

    |

  4. The magnetic flux linked with a coil varies with time t as phi=at^(2)+...

    Text Solution

    |

  5. Induced current in a coil due to electromagnetic induction does not de...

    Text Solution

    |

  6. A metal ring is held horizontally with the ground and a bar magnet is ...

    Text Solution

    |

  7. An electric potential difference will be induced between the ends of t...

    Text Solution

    |

  8. In the figure a circular loop of radius r and resistance R is shown. A...

    Text Solution

    |

  9. Two identical circular loops of metal wire are lying on a table withou...

    Text Solution

    |

  10. A circular disc of radius 0.2 m is placed in a uniform magnetic field ...

    Text Solution

    |

  11. A square wire loop of side 10 cm is placed at an angle of 45^(@) with ...

    Text Solution

    |

  12. A rod of length b moves with a constant velocity v in the magnetic fie...

    Text Solution

    |

  13. A boat is moving due east in a region where the earth's magnetic field...

    Text Solution

    |

  14. SI unit henry (H) of inductance can be written as

    Text Solution

    |

  15. The self-inductance of a long straight solenoid is L. Each of the leng...

    Text Solution

    |

  16. The self inductances of two coils are 16 mH and 25 mH, and they have a...

    Text Solution

    |

  17. If current I passes through a pure inductor of self-inductance L, the ...

    Text Solution

    |

  18. Two solenoids of equal number of turns have their lengths and the radi...

    Text Solution

    |

  19. The current I in a coil varies with time as shown in the fig. The vari...

    Text Solution

    |