Home
Class 12
PHYSICS
A horizontal conducting rod 10 m long ex...

A horizontal conducting rod 10 m long extending from east to west is falling with a speed 5.0 m . `s^(-1)` at right angles to the horizontal component of the Earth's magnetic field, `0.3xx10^(-4)Wb.m^(-2)`. Find the instantaneous value of the emf induced in the rod.

Text Solution

Verified by Experts

Instantaneous value of the induced emf in the rod,
`e=Blvsintheta=0.3xx10^(-4)xx10xx5xxsin90^(@)`
`=15xx10^(-4)V=1.5mV`
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise NEET|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 horizontal straight wire 5 m long extending from east to west is falling with a speed of 10 m/s at right angles to the horizontal component of earth's magnetic field 0.40xx10^(-4)Wb.m^(-2) . find the instantaneous value of emf induced in the wire.

A horozontal straight wire 5m long extending from east to west is falling with a speed of 10 ms^-1 at right angles to the horizontal component of earth's magnetic field 0.40xx10^-4 Wb m^-2 . Find the instantaneous value of emf induced in the wire

A horizontal straight wire 5 m long extending from east to west is falling with a speed of 10 m/s at right angles to the horizontal component of earth's magnetic field 0.40xx10^(-4)Wb.m^(-2) . What is the direction of the emf?

A horizontal straight wire 10 m long extending from east to west is falling with a speed of 5 m . s^(-1) , at right angles to the horizontal component of earth's magnetic field, 0.30xx10^(-4)Wb.m^(-2) . what is the emf induced in the wire. Which end of the wire is at higher electrical potential?

A horozontal straight wire 5m long extending from east to west is falling with a speed of 10 ms_-1 at right angles to the horizontal component of earth's magnetic field 0.40xx10_4 Wb m_2 . What is the direction of the emf?

A horizontal straight wire 5 m long extending from east to west is falling with a speed of 10 m/s at right angles to the horizontal component of earth's magnetic field 0.40xx10^(-4)Wb.m^(-2) . Which end of the wire will be at higher potential? (Neglect acceleration due to gravity.)

A horozontal straight wire 5m long extending from east to west is falling with a speed of 10 ms_-1 at right angles to the horizontal component of earth's magnetic field 0.40xx10_4 Wb m_2 . Which end of the wire will be at higher potential?

At any place the angle of dip is 30^@ . If the horizontal component of earth’s magnetic field is 0.5 Oe then, What Is the value of earths magnetic field at that point?—

A particle is projected from the surface of the earth with a speed of 20 m* s^(-1) at an angle 30^@ with the horizontal . The range of that particle is

CHHAYA PUBLICATION-ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT-CBSE SCANNER
  1. A conducting loop is held above a current carrying wire PQ as shown in...

    Text Solution

    |

  2. Define the term self-inductance of a solenoid. Obtain the expression f...

    Text Solution

    |

  3. A varying current in a coil change from 10A to 0 in 0.5sec. If the ave...

    Text Solution

    |

  4. A rod of length l is moved horizontally with a uniform velocity v in a...

    Text Solution

    |

  5. How does one understand this motional emf by invoking the Lorentz forc...

    Text Solution

    |

  6. Describe, with the help of a suitable diagram, how one can demonstrate...

    Text Solution

    |

  7. Two loops, one rectangular of dimensions 10 cm xx 2.5 cm and second of...

    Text Solution

    |

  8. Two loops, one rectangular of dimensions 10 cm xx 2.5 cm and second of...

    Text Solution

    |

  9. Sketch the change in flux, emf and force when a conducting rod PQ of r...

    Text Solution

    |

  10. Define mutual inductance.

    Text Solution

    |

  11. A pair of adjacent coils has a mutual inductance of 1.5 H. If the curr...

    Text Solution

    |

  12. A long straight current carrying wire passes normally through the cent...

    Text Solution

    |

  13. Predict the polarity of the capacitor in the situation described below...

    Text Solution

    |

  14. The average self-induced emf in a 25mH solenoid when the current in it...

    Text Solution

    |

  15. What is the direction of induced currents in metal rings 1 and 2 when ...

    Text Solution

    |

  16. A horizontal conducting rod 10 m long extending from east to west is f...

    Text Solution

    |

  17. Define the term 'self-inductance' and write its SI unit.

    Text Solution

    |

  18. Obtain the expression for the mutual inductance of two long coaxial so...

    Text Solution

    |

  19. Define self-inductance of a coil. Obtain the expression for the energy...

    Text Solution

    |

  20. An aeroplane is flying horizontally from west to east with a velocity ...

    Text Solution

    |