Physics-
General
Easy

Question

A light bulb, a capacitor and a battery are connected together as shown here, with switch S initially open. When the switch Sis closed, which one of the following is true

  1. The bulb will light up for an instant when the capacitor starts charging    
  2. The bulb will light up when the capacitor is fully charged    
  3. The bulb will not light up at all    
  4. The bulb will light up and go off at regular intervals    

The correct answer is: The bulb will light up for an instant when the capacitor starts charging


    Initially when key is closed, the capacitor acts as short-circuit, so bulb will light up. But finally the capacitor becomes fully charged, so it will act as open circuit, so bulb will not glow.

    Related Questions to study

    General
    Maths-

    y= 2 to the power of x divided by l o g blank x end exponent, then fraction numerator d y over denominator d x end fraction at x = e is

    y= 2 to the power of x divided by l o g blank x end exponent, then fraction numerator d y over denominator d x end fraction at x = e is

    Maths-General
    General
    Maths-

    lf ST and SN are the Iengths of the subtangent and the subnormal at the point theta equals pi divided by 2 on the curve chi equals a left parenthesis theta plus sin invisible function application theta right parenthesis comma gamma equals straight a left parenthesis 1 minus cos invisible function application theta right parenthesis , where 0 not equal to], then

    lf ST and SN are the Iengths of the subtangent and the subnormal at the point theta equals pi divided by 2 on the curve chi equals a left parenthesis theta plus sin invisible function application theta right parenthesis comma gamma equals straight a left parenthesis 1 minus cos invisible function application theta right parenthesis , where 0 not equal to], then

    Maths-General
    General
    Maths-

    The normal to the curves chi equals a left parenthesis 1 plus blank c o s blank theta right parenthesis and gamma equals a blank s i n blank theta at angle theta always passes through the fixed point

    The normal to the curves chi equals a left parenthesis 1 plus blank c o s blank theta right parenthesis and gamma equals a blank s i n blank theta at angle theta always passes through the fixed point

    Maths-General
    parallel
    General
    Maths-

    If increment subscript 1 end subscript=open vertical bar table row x a a row b x a row b b x end table close vertical barand increment subscript 2 end subscript=open vertical bar table row x a row b x end table close vertical bar then

    If increment subscript 1 end subscript=open vertical bar table row x a a row b x a row b b x end table close vertical barand increment subscript 2 end subscript=open vertical bar table row x a row b x end table close vertical bar then

    Maths-General
    General
    Physics-

    The distance between the circular plates of a parallel plate condenser 40 m m in diameter, in order to have same capacity as a sphere of radius 1   m e t r eis

    The distance between the circular plates of a parallel plate condenser 40 m m in diameter, in order to have same capacity as a sphere of radius 1   m e t r eis

    Physics-General
    General
    Physics-

    A frictionless dielectric plate S is kept on a frictionless table T. A charged parallel plate capacitance C (of which the plates are frictionless) is kept near it. The plate S is between the plates. When the plate S is left between the plates

    A frictionless dielectric plate S is kept on a frictionless table T. A charged parallel plate capacitance C (of which the plates are frictionless) is kept near it. The plate S is between the plates. When the plate S is left between the plates

    Physics-General
    parallel
    General
    Physics-

    As shown in the figure, a very thin sheet of aluminium is placed in between the plates of the condenser. Then the capacity

    As shown in the figure, a very thin sheet of aluminium is placed in between the plates of the condenser. Then the capacity

    Physics-General
    General
    Physics-

    Force of attraction between the plates of a parallel plate capacitor is

    Force of attraction between the plates of a parallel plate capacitor is

    Physics-General
    General
    Physics-

    A parallel plate condenser is connected with the terminals of a battery. The distance between the plates is6 m m. If a glass plate (dielectric constantK equals 9) of 4.5 m m is introduced between them, then the capacity will become

    A parallel plate condenser is connected with the terminals of a battery. The distance between the plates is6 m m. If a glass plate (dielectric constantK equals 9) of 4.5 m m is introduced between them, then the capacity will become

    Physics-General
    parallel
    General
    Physics-

    drops each having the capacity C and potential Vare combined to form a big drop. If the charge on the small drop isq, then the charge on the big drop will be

    drops each having the capacity C and potential Vare combined to form a big drop. If the charge on the small drop isq, then the charge on the big drop will be

    Physics-General
    General
    Physics-

    Separation between the plates of a parallel plate capacitor is dand the area of each plate is A. When a slab of material of dielectric constantkand thickness t left parenthesis t less than d right parenthesis is introduced between the plates, its capacitance becomes

    Separation between the plates of a parallel plate capacitor is dand the area of each plate is A. When a slab of material of dielectric constantkand thickness t left parenthesis t less than d right parenthesis is introduced between the plates, its capacitance becomes

    Physics-General
    General
    Physics-

    The energy of a charged capacitor is given by the expression (q = charge on the conductor and C = its capacity)

    The energy of a charged capacitor is given by the expression (q = charge on the conductor and C = its capacity)

    Physics-General
    parallel
    General
    Physics-

    The electric flux for Gaussian surface A that enclose the charged particles in free space is (given q1 = –14 nC, q2 = 78.85 nC, q3 = – 56 nC)

    The electric flux for Gaussian surface A that enclose the charged particles in free space is (given q1 = –14 nC, q2 = 78.85 nC, q3 = – 56 nC)

    Physics-General
    General
    Physics-

    Consider the charge configuration and spherical Gaussian surface as shown in the figure. When calculating the flux of the electric field over the spherical surface the electric field will be due to

    Consider the charge configuration and spherical Gaussian surface as shown in the figure. When calculating the flux of the electric field over the spherical surface the electric field will be due to

    Physics-General
    General
    Physics-

    Shown below is a distribution of charges. The flux of electric field due to these charges through the surface S is

    Shown below is a distribution of charges. The flux of electric field due to these charges through the surface S is

    Physics-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.