AIEEE 2007 | Capacitor Question 149 | Physics

A battery is used to charge a parallel plate capacitor till the potential difference between the plates becomes equal to the electromotive force of the battery. The ratio of the energy stored in the capacitor and the work done by the battery will be

$$1/2$$

$$1$$

$$2$$

$$1/4$$

AIEEE 2007

MCQ (Single Correct Answer)

-1

A parallel plate condenser with a dielectric of dielectric constant $$K$$ between the plates has a capacity $$C$$ and is charged to a potential $$V$$ volt. The dielectric slab is slowly removed from between the plates and then reinserted. The net work done by the system in this process is

zero

$${1 \over 2}\,\left( {K - 1} \right)\,C{V^2}$$

$${{C{V^2}\left( {K - 1} \right)} \over K}$$

$$\left( {K - 1} \right)\,C{V^2}$$

AIEEE 2005

MCQ (Single Correct Answer)

-1

A parallel plate capacitor is made by stacking $$n$$ equally spaced plates connected alternatively. If the capacitance between any two adjacent plates is $$'C'$$ then the resultant capacitance is

$$\left( {n + 1} \right)C$$

$$\left( {n - 1} \right)C$$

$$nC$$

$$C$$

AIEEE 2005

MCQ (Single Correct Answer)

-1

A fully charged capacitor has a capacitance $$'C'$$. It is discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat capacity $$'s'$$ and mass $$'m'.$$ If the temperature of the block is raised by $$'\Delta T',$$ the potential difference $$'v'$$ across the capacitance is

$${{mCAT} \over s}$$

$$\sqrt {{{2mCAT} \over s}} $$

$$\sqrt {{{2msAT} \over C}} $$

$${{ms\Delta T} \over C}$$

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