Home
Class 12
PHYSICS
Sea water at frequency v=4 xx 10^(8) Hz ...

Sea water at frequency `v=4 xx 10^(8) Hz` has permittivity `varepsilon approx` `80 varepsilon_(0)`, permeability `mu approx mu_(0)` and resistivity `rho=0.25 ohm m`. Imagine a parallel plate capacitor immersed in sea water and driven by an alternating voltage source `V(t)=V_(0) sin (2 pi v t) .` What percent of the conduction current density is the displacement current density?

Text Solution

Verified by Experts

The correct Answer is:
44.44
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    CENGAGE PHYSICS|Exercise Comphension Based|8 Videos

  • OSCILLATIONS

    CENGAGE PHYSICS|Exercise QUESTION BANK|39 Videos

  • ATOMIC PHYSICS

    CENGAGE PHYSICS|Exercise ddp.4.3|15 Videos

Similar Questions

Explore conceptually related problems

Sea water at frequency v=4 xx 10^(8) Hz has permittivity epsilon ~~ 80 epsilon_(0) permeability mu= mu_(0) and resistivity rho= 0.25 M. Imagine a parallel plate capacitor immersed in sea water and driven by an alternating voltage source V(t) =V_(0) " sin "(2pivt). What fraction of the conduction current density is the displacement current density ?

Sea water at a frequency f=9xx10^(2) Hz, has permittivity epsilon=80epsilon_(0) , and resistivity rho=0.25 Omega m. Imagine a parallel plate capacitor is immersed in seawater and is driven by an alternating voltage source V(t)= V_(0) sin (2pi ft) . Then the conduction current density becomes 10^(x) times the displacement current density after time t =(1)/(800)s . The value of x is __________ (Given : (1)/(4pi epsilon_(0))=9xx10^(9)Nm^(2)C^(-2) )

A coil of inductance 5.0 mH and negligible resistance is connected to an alternating voltage V=10 sin (100t) . The peak current in the circuit will be:

A parallel plate capacitor consists of two circular plates of radius 0.05 m. If electric field between the plate is change as (dE)/(dt) = 10^(10) (V)/(m-s) , then find displacement current between the plates.

A parallel plate capacitor consits of two circular plates of radius 0.5m. If electric field between the plates changed as (dE)/(dt) = 10^(10). (V)/(m-c) , then find displacement current between the plates

The voltage between the plates of a parallel plate capacitor of capacitance 2 mu F is changing at the rate of 4 V//s . What is the displacement current in the capacitor?

Alternating voltage V = 400 sin ( 500 pi t ) is applied across a resistance of 0.2 kOmega . The r.m.s. value of current will be equal to

CENGAGE PHYSICS-ALTERNATING CURRENT-QUESTION BANK
  1. In an electromagnetic wave, E=1.2 sin (2xx 10^(6) t-k x) N/C If the va...

    Text Solution

    |

  2. An electromagnetic wave of intensity 1400. (W) / (m)^(2) falls on a me...

    Text Solution

    |

  3. The intensity of solar radiation on the ẻarth is 450W/ (m)^(2). Assumi...

    Text Solution

    |

  4. The power of a point source is 18.75mW Find the intensity (in (mW) / (...

    Text Solution

    |

  5. A plane electromagnetic wave of frequency 40 MHz travels in free space...

    Text Solution

    |

  6. The sun delivers 10^(3)(W/m^2) of electromagnetic flux to the earth's ...

    Text Solution

    |

  7. The electric field in an electromagnetic wave is given by: E= (50 NC^(...

    Text Solution

    |

  8. In a plane EM wave, the electric field oscillates, sinusoidally at a f...

    Text Solution

    |

  9. In a medium, the electric field in an EM wave is given as: E=E(0) sin ...

    Text Solution

    |

  10. The electric field intensity produced by the radiations coming from 10...

    Text Solution

    |

  11. A radio receiver receives a massage at 300 m band, if the available in...

    Text Solution

    |

  12. A charged particle oscillates about its mean equilibrium position with...

    Text Solution

    |

  13. The magnetic field of a beam emerging from a filter facing a floodligh...

    Text Solution

    |

  14. The electric field of a' plane electromagnetic wave in vacuum is repre...

    Text Solution

    |

  15. In an EM wave, E=50 sin (omega t-k x). If mu=4 mu(0) and varepsilon=va...

    Text Solution

    |

  16. A point source of power 15 Wis placed at a certain point in the space....

    Text Solution

    |

  17. A plane electromagnetic wave of angular frequency omega propagates in ...

    Text Solution

    |

  18. Light with an energy. fiux of 20W/ (cm)^(2) falls on a nonreflecting s...

    Text Solution

    |

  19. Sea water at frequency v=4 xx 10^(8) Hz has permittivity varepsilon ap...

    Text Solution

    |

  20. A plane EM wave travelling along z-direction is described by E=E(0) si...

    Text Solution

    |