Physics-
General
Easy

Question

In the circuit, if the forward voltage drop for the diode is 0.5 V, the current will be

  1. 3.4 mA    
  2. 2 mA    
  3. 2.5 mA    
  4. 3 mA    

The correct answer is: 3.4 mA


    When diode is forward biased, then there is a small voltage drop across it
    i equals fraction numerator V minus V to the power of ´ end exponent over denominator R end fraction
    Given, V equals 8 blank v o l t comma blank V to the power of ´ end exponent equals 0.5 blank v o l t comma
    R equals 2.2 blank k blank capital omega equals 2.2 cross times 10 to the power of 3 end exponent capital omega
    therefore equals blank fraction numerator 8 minus 0.5 over denominator 2.2 cross times 10 to the power of 3 end exponent end fraction equals fraction numerator 7.5 cross times 10 to the power of 3 end exponent over denominator 2.2 end fraction equals 3.4 cross times 10 to the power of negative blank 3 end exponent A
    i equals 3.4 blank m A.

    Related Questions to study

    General
    Physics-

    The diode used in the circuit shown in the figure has a constant voltage drop of 0.5 V at all currents and a maximum power rating of 100 milli-watt. What should be the value of the resistanceR, connected in series with the diode, for obtaining maximum current?

    The diode used in the circuit shown in the figure has a constant voltage drop of 0.5 V at all currents and a maximum power rating of 100 milli-watt. What should be the value of the resistanceR, connected in series with the diode, for obtaining maximum current?

    Physics-General
    General
    Chemistry-

    In the reactions A and B are geometrical isomers of RC  CR

    In the reactions A and B are geometrical isomers of RC  CR

    Chemistry-General
    General
    Physics-

    The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit?

    The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit?

    Physics-General
    parallel
    General
    Physics-

    A conductor and a semiconductor are connected in parallel as shown in the figure. At a certain voltage both ammeters register the same current. If the voltage of the DC source is increased then the

    A conductor and a semiconductor are connected in parallel as shown in the figure. At a certain voltage both ammeters register the same current. If the voltage of the DC source is increased then the

    Physics-General
    General
    Physics-

    Figure shows a diode connected to an external resistance and an emf. Assuming that the barrier potential developed in diode is 0.5 V, obtain the value of current in the circuit in milli ampere.

    Figure shows a diode connected to an external resistance and an emf. Assuming that the barrier potential developed in diode is 0.5 V, obtain the value of current in the circuit in milli ampere.

    Physics-General
    General
    Chemistry-

    Identify the alkyne in the following sequence of reactions:

    Identify the alkyne in the following sequence of reactions:

    Chemistry-General
    parallel
    General
    Chemistry-

    Trans-2-butene + Br2 gives:

    Trans-2-butene + Br2 gives:

    Chemistry-General
    General
    Chemistry-

    (A) Addition of HBr to 1-butene gives two optical isomers.
    (R) The product contains one asymmetric carbon.

    (A) Addition of HBr to 1-butene gives two optical isomers.
    (R) The product contains one asymmetric carbon.

    Chemistry-General
    General
    Chemistry-

    The synthesis of 3-octyne is achieved by adding a bromoalkene into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are :

    The synthesis of 3-octyne is achieved by adding a bromoalkene into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are :

    Chemistry-General
    parallel
    General
    Chemistry-

    Identify the product in the reaction
    Ph minus straight C equals straight C minus Me to the power of not stretchy ⟶ with straight H subscript 3 straight O to the power of plus comma Hg to the power of 2 plus end exponent on top ? end exponent

    Identify the product in the reaction
    Ph minus straight C equals straight C minus Me to the power of not stretchy ⟶ with straight H subscript 3 straight O to the power of plus comma Hg to the power of 2 plus end exponent on top ? end exponent

    Chemistry-General
    General
    Chemistry-

    The major product formed when 2-bromobutane is treated with alcoholic KOH is :

    The major product formed when 2-bromobutane is treated with alcoholic KOH is :

    Chemistry-General
    General
    Chemistry-

    Name the reagent used to bring about the following transformation: but-2-ene to ethanal:

    Name the reagent used to bring about the following transformation: but-2-ene to ethanal:

    Chemistry-General
    parallel
    General
    Chemistry-

    In the following reaction, the product 'R' is :CaC subscript 2 not stretchy rightwards arrow with straight H subscript 2 straight O on top straight P fraction numerator text  hot iron  end text over denominator text  tube  end text end fraction straight Q fraction numerator CH subscript 3 Cl over denominator AlCl subscript 3 end fraction not stretchy rightwards arrow straight R

    In the following reaction, the product 'R' is :CaC subscript 2 not stretchy rightwards arrow with straight H subscript 2 straight O on top straight P fraction numerator text  hot iron  end text over denominator text  tube  end text end fraction straight Q fraction numerator CH subscript 3 Cl over denominator AlCl subscript 3 end fraction not stretchy rightwards arrow straight R

    Chemistry-General
    General
    Chemistry-

    Among the given· compounds, one which can be distinguished by AgNO3 is:

    Among the given· compounds, one which can be distinguished by AgNO3 is:

    Chemistry-General
    General
    Chemistry-

    The alkene that will give the same product with HBr in the absence as well as in the presence of peroxide is':

    The alkene that will give the same product with HBr in the absence as well as in the presence of peroxide is':

    Chemistry-General
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.