Distance between circular plates of a parallel plate condenser 40,mm in diameter, in order to have s

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2. Electric Potential and Capacitance

medium

The distance between the circular plates of a parallel plate condenser $40\,mm$ in diameter, in order to have same capacity as a sphere of radius $1\;metre$ is....$mm$

$0.01$

$0.1$

$1.0$

$10 $

Solution

(b) $4\pi {\varepsilon _0}r = \frac{{{\varepsilon _0}A}}{d}$ $==>$ $d = \frac{A}{{4\pi r}} = \frac{{\pi {{(20 \times {{10}^{ – 3}})}^2}}}{{4\pi \times 1}} = 0.1\,mm$

Standard 12

Physics

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(JEE MAIN-2022)

In a spherical condenser radius of the outer sphere is $R$. The different in the radii of outer and inner sphere in $x$. Its capacity is proportional to

hard

The distance between the circular plates of a parallel plate condenser $40\,mm$ in diameter, in order to have same capacity as a sphere of radius $1\;metre$ is....$mm$

Solution

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