Home
Class 12
PHYSICS
With 448 mW power used the number of ele...

With 448 mW power used the number of electrons reaching the anode/sec is `1.4xx10^(16)` , then plate voltage is :

A

150 V

B

200 V

C

`14xx484V`

D

32 volts

Text Solution

Verified by Experts

The correct Answer is:
B
Here, neV = Power , where n = no. of electrons reaching/sec.
`:. V_p=(448xx10^(-3))/(1.4xx10^(16)xx1.6xx10^(-19))=200V`
Promotional Banner

Topper's Solved these Questions

  • SOLIDS & SEMICONDUCTOR DEVICES

    MODERN PUBLICATION|Exercise Multiple Choice Questions - LEVEL -III (Questions From AIEEE/JEE Examination)|9 Videos

  • SOLIDS & SEMICONDUCTOR DEVICES

    MODERN PUBLICATION|Exercise Recent Competitive Questions|26 Videos

  • SOLIDS & SEMICONDUCTOR DEVICES

    MODERN PUBLICATION|Exercise Multiple Choice Questions - LEVEL -I (PARAGRAPH)|6 Videos

  • ROTATIONAL MOTION

    MODERN PUBLICATION|Exercise RCQ|8 Videos

  • TRANSFERENCE OF HEAT

    MODERN PUBLICATION|Exercise Recent Competitive Questions|4 Videos

Similar Questions

Explore conceptually related problems

A current of 2 A is passing through a metal wire of cross sectional area 2 xx 10^(-6) m^(-2) . If the number density of free electrons in the wire is 5 xx 10^(26) m^(-3) , the drift speed of electrons is (given e = 1.6 xx 10^(-19) C)

The number of silicon atoms per m^(3) is 5 xx 10^(28) . This is doped simultaneously with 5 xx 10^(22) atoms per m^(3) of Arsenic and 5 xx 10^(20) per m^(3) atoms of Indium. Calculate the number of electrons and holes given that n_(i) = 1.5 xx 10^(16) m^(-3) . Is the material n-type or p-type?

A current of 2 ampere passes through a wire for 8 seconds . Number of electrons passing across the wire is (electronic charge 1.6 xx 10^(-19) coulomb)

If the number density of electrons in a conductor is 3 xx10^(28) and thickness of the conductor is 5 mm, then calculate the current in that conductor for a drift velocity of 2 xx 10^(-4) ms^(-1) . If the voltage applied is 500 V , then calculate relaxation time. Given specific charge of electron = 1.76xx 10^(11) C kg^(-1) , length of the conductor = 10 m

A current of 2 ampere passes through a wire for 8 seconds. Number of electrons passing across the wire is (electronic charge 1.6 xx 10^(-19) coulomb)

MODERN PUBLICATION-SOLIDS & SEMICONDUCTOR DEVICES-Multiple Choice Questions - LEVEL -II
  1. In AND operation if Y is output and A and B are inputs the truth table...

    Text Solution

    |

  2. The slope of ip-Vg curve is 2 mA/V and slope of ip-Vp curve is 0.25 mA...

    Text Solution

    |

  3. With 448 mW power used the number of electrons reaching the anode/sec ...

    Text Solution

    |

  4. Two triodes A and B have plate amplifications factor of 40 . The plate...

    Text Solution

    |

  5. Keeping the grid voltage constant a change in the plate potential of 5...

    Text Solution

    |

  6. For a transistor the current amplification factor is 0.8 . If the tran...

    Text Solution

    |

  7. Two junction diodes one of germanium (Ge) and other of silicon (Si) ar...

    Text Solution

    |

  8. In the following common emitter configuration an NPN transistor with c...

    Text Solution

    |

  9. A Ge specimen is doped with Al. The concentration of acceptor atoms is...

    Text Solution

    |

  10. The diode used in the circuit shown in figure has a constant voltage d...

    Text Solution

    |

  11. In an n-p-n transistor circuit, the collector current is 10mA. If 90% ...

    Text Solution

    |

  12. A transistor with alpha = 0.98 is operated in common emitter circuit ...

    Text Solution

    |

  13. In a common emitter amplifier output resistance is 2000 ohm and input ...

    Text Solution

    |

  14. In a common emitter amplifier output resistance is 2000 ohm and input ...

    Text Solution

    |

  15. A n-p-n transistor is connected in C - E configuration Collector suppl...

    Text Solution

    |

  16. A n-p-n transistor is connected in C - E configuration Collector suppl...

    Text Solution

    |

  17. To get an output Y = 1 from circuit of figure, the inputs must be :

    Text Solution

    |

  18. A 2V battery is connected across the points A and B as shown in the fi...

    Text Solution

    |

  19. In the circuit , if the forward voltage drop for the diode is 0.5 V , ...

    Text Solution

    |

  20. A P - type semiconductor has acceptor level 57 meV above the valence b...

    Text Solution

    |