AIEEE 2012 | Capacitor Question 102 | Physics

AIEEE 2012

MCQ (Single Correct Answer)

-1

The figure shows an experimental plot for discharging of a capacitor in an R-C circuit. The time constant $$\tau $$ of this circuit lies between AIEEE 2012 Physics - Capacitor Question 66 English

AIEEE 2012 Physics - Capacitor Question 66 English

100 sec and 150 sec

0 and 50 sec

50 sec and 100 sec

150 sec and 200 sec

AIEEE 2008

MCQ (Single Correct Answer)

-1

A parallel plate capacitor with air between the plates has capacitance of $$9$$ $$pF.$$ The separation between its plates is $$'d'.$$ The space between the plates has dielectric constant $${k_1}$$ $$=3$$ and thickness $${d \over 3}$$ while the other one has dielectric constant $${k_2} = 6$$ and thickness $${{2d} \over 3}$$. Capacitance of the capacitor is now

$$1.8$$ $$pF$$

$$45$$ $$pF$$

$$40.5$$ $$pF$$

$$20.25$$ $$pF$$

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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