Home
Class 12
PHYSICS
When the voltage drop across a p-n junc...

When the voltage drop across a p-n junction diode is increased from 0.65 V to 0.70 V , the change in the diode current is 5 mA . The dynamic resistance of the diode is

A

A) `20 Omega`

B

B) `50 Omega`

C

C)`10 Omega`

D

D) `80 Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NEW JOYTHI PUBLICATION|Exercise PREVIOUS YEAR QUESTIONS|3 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|26 Videos

  • WAVE OPTICS

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|17 Videos

Similar Questions

Explore conceptually related problems

When the plate voltage applied to a diode value is changed from 40 V to 42 V , the plate current increases from 50 mA to 60 mA . Calculate the dynamic plate resistance at the operating condition.

When the diode shows saturated current, dynamic plate resistance is

Fig shows a p-n junction diode. a. What does V_(B) denote ? b. Name the region AB.

The current-voltage characteristic of an ideal p-n junction diode is given by i=i_0(e^eV//kT-1) where the drift current i_0 equals 10(mu)A .Take the temperature T to be 300K.(a)Find the voltage v_0 for which e^(eV//kT)=100 .One can neglect the term 1 for vlatages greater than this value (b)Find an expression of the dynamic resistance of the diode as a function of V for VgtV_0 .(c)Find the voltage for which the dynamic resistance is 2.0 (Omega)

When the base current in a transistor is changed from 30 mu A to80 mu A , the collector current is changed from 1.0 mA to 3.5 mA . Find the current gain beta .

A transistor is operated in common -emitter configuration at V_c=2 such that a change in the base current from 100 mu A to 200 mu A produces a change in the collector current from 5mA to 10 mA.The current gain is:

In forward bias made , the P.N junction diode resistance will ………..

The i-V characteristic of a p-n junction diode is shown in figure.Find the approximate dynamic resistance of the p-n junction when (a) a forward bias of 1 volt is applied ,(b) a forward bias of 2 volt is applied is applied .

When a voltage of 120V is impressed across the primary of a transformer , the current in the primary is 1.85mA . Find the voltage across the secondary , when it delivers 150mA . The transformer has an efficiency of 95%

The collector supply voltage is 6 V and the voltage drop across a resistor of 600 Omega in the collector circuit is 0.6 V , in a transistor connected in common emitter mode . If the current gain is 20 , the base current is

NEW JOYTHI PUBLICATION-SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS -COMPETITIVE EXAM CORNER
  1. The collector supply voltage is 6 V and the voltage drop across a resi...

    Text Solution

    |

  2. A full - wave rectifier circuit with an ac input is shown. The ou...

    Text Solution

    |

  3. When the voltage drop across a p-n junction diode is increased from 0...

    Text Solution

    |

  4. If the voltage between the terminals A and B is 17 V and Zener breakdo...

    Text Solution

    |

  5. GaAs (with a band gap = 1.5 eV) as a L.E.D can emit

    Text Solution

    |

  6. The circuit diagram shows a logic combination with the states of outpu...

    Text Solution

    |

  7. In a common emitter transistor amplifier , the output resistance is 50...

    Text Solution

    |

  8. In the circuit given , the current through the zener diode is

    Text Solution

    |

  9. A transistor oscillator is (i) an amplifier with positive feedback (ii...

    Text Solution

    |

  10. A semiconductor with a band gap of 2.5 eV is used to fabricate a p-n p...

    Text Solution

    |

  11. In the circuit given A , B and C are inputs and Y is the output T...

    Text Solution

    |

  12. In the given circuits for ideal diode , the current through the batter...

    Text Solution

    |

  13. The logic gates giving output '1' for the inputs of '1' and '0' are

    Text Solution

    |

  14. Identify the mismatch of the following :

    Text Solution

    |

  15. If a PN junction diode of depletion layer width W and barrier height ...

    Text Solution

    |

  16. The heavily and lightly doped regions of a bipolar junction transistor...

    Text Solution

    |

  17. The device used for detecting optical signal is

    Text Solution

    |

  18. The logical operation carried out by the above circuit is

    Text Solution

    |

  19. In CE transistor amplifier , if the base current is increased by 20 mu...

    Text Solution

    |

  20. If an ideal junction diode is connected as shown , then the value of t...

    Text Solution

    |