Home
Class 12
PHYSICS
If the thermionic current density is J a...

If the thermionic current density is J and emitter temperature is T then the curve between `(J)/(T^(2))` and `(1)/(T)` will be

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTRONICS

    ERRORLESS |Exercise Digital Electronics|2 Videos
  • ELECTRONICS

    ERRORLESS |Exercise Valve Electronics (Diode and Triode)|3 Videos
  • ELECTRON, PHOTON, PHOTOELECTRIC EFFECT AND X-RAYS

    ERRORLESS |Exercise Self Evaluation Test|3 Videos
  • ELECTROSTATICS

    ERRORLESS |Exercise Ordinary Thinking Objective Questions (Electric Flux and Gauss.s Law)|28 Videos

Similar Questions

Explore conceptually related problems

The current curve between log_e""(j)/(T^2)" and "l/T

The ratio of thermionic currents (I//I_(0)) for a metal when the temperature is slowly increased T_(0) to T as shown in figure. (I and I_(0) are currents at T and respectively). Then which one is correct?

Thermionic emission from a heated filament varies with its temperature T as

The density (rho) versus pressure (P) graphs of a given mass of an ideal gas is shown at two temperatures T_(1) and T_(2) . Then relation between T_(1) and T_2 may be

Above the inversion temperature, mu (J.T. coefficient)

T_(1) is the temperature of oxygen enclosed in a cylinder. The temperature is increased to T_(2) and Maxwellian distribution curves for O_(2) at temperatures T_(1) and T_(2) are plotted. If A_(1) and A_(2) are the areas under the curves and the speed axis, in both cases, then

One junction of a certain thermoelectric couple is at a fixed temperature r T and the other junction is at temperature T . The thermo electromotive force for this is expressed by E=K(T-T_(r ))[T_(0)-(1)/(2)(T+T_(r ))] . At temperature T=(1)/(2)T_(0) , the thermoelectric power is

In a certain circuit current changes with time according to i=2sqrt(t) RMS value of current between t=2s to t=4s will be

Two curves are given at temperatures T_(1) and T_(2) in an isothermal process, then-

ERRORLESS -ELECTRONICS-Selv Evaluation Test
  1. If the thermionic current density is J and emitter temperature is T th...

    Text Solution

    |

  2. In a pure silicon (n(i)=10^(16)//m^(3)) crystal at 300K, 10^(21) atoms...

    Text Solution

    |

  3. In the Boolean algebra bar(A).bar(B) equals is :-

    Text Solution

    |

  4. In the given circuit as shown the two input waveform A and B are appli...

    Text Solution

    |

  5. Two identical capacitors A and B are charged to the same potential V a...

    Text Solution

    |

  6. In transistor, forward bias is always smaller than the reverse bias. T...

    Text Solution

    |

  7. In NPN transistor, if doping in base region is increased then collecto...

    Text Solution

    |

  8. In the following circuit I(1) and I(2) are respectively

    Text Solution

    |

  9. In space charge limited region, the plate current in a diode is 10 mA ...

    Text Solution

    |

  10. A triode has a plate resistance of 10 k Omega and amplification factor...

    Text Solution

    |

  11. Pure sodium (Na) is a good conductor of electricity because the 3s and...

    Text Solution

    |

  12. Would there be any advantage to adding n-type or p-type impurities to ...

    Text Solution

    |

  13. In the following common emitter circuit if beta=100, V(CE)=7 V, V(BE)=...

    Text Solution

    |

  14. When a battery is connected to a P-type semiconductor with a metallic ...

    Text Solution

    |

  15. Is the ionisation energy of an isolated free atom different from the i...

    Text Solution

    |

  16. In the following circuit, a voltmeter V is connected across a lamp L. ...

    Text Solution

    |

  17. For given electric voltage signal dc value is

    Text Solution

    |

  18. When a silicon PN junction is in forwards biased condition with series...

    Text Solution

    |

  19. In the following circuit the equivalent resistance between A and B is

    Text Solution

    |

  20. In the following circuit of PN junction diodes D(1),D(2) and D(3) are ...

    Text Solution

    |

  21. In circuit in following figure the value of Y is-

    Text Solution

    |