WB JEE 2023 | Capacitor Question 3 | Physics

12 $$\mu$$C and 6 $$\mu$$C charges are given to the two conducting plates having same cross-sectional area and placed face to face close to each other as shown in the figure. The resulting charge distribution in $$\mu$$C on surfaces A, B, C and D are respectively,

9, 3, $$-$$3, 9

3, 9, $$-$$9, 3

6, 6, $$-$$6, 12

6, 6, 3, 3

WB JEE 2022

MCQ (Single Correct Answer)

-0.5

Find the equivalent capacitance between A and B of the following arrangement :

WB JEE 2022 Physics - Capacitor Question 5 English

$${{2C} \over 3}$$

$${{3C} \over 2}$$

WB JEE 2022

MCQ (Single Correct Answer)

-0.5

Three concentric metallic shells A, B and C of radii a, b and c (a < b < c) have surface charge densities +$$\sigma$$, $$-$$$$\sigma$$ and +$$\sigma$$ respectively. The potential of shell B is

WB JEE 2022 Physics - Capacitor Question 6 English

$$(a + b + c){\sigma \over {{\varepsilon _0}}}$$

$${{\sigma c} \over {{\varepsilon _0}}}$$

$$\left( {{{{a^2}} \over c} - {{{b^2}} \over c} + c} \right){\sigma \over {{\varepsilon _0}}}$$

$$\left( {{{{a^2}} \over c} - b + c} \right){\sigma \over {{\varepsilon _0}}}$$

WB JEE 2018

MCQ (Single Correct Answer)

-0.5

The insulated plates of a charged parallel plate capacitor (with small separation between the plates) are approaching each other due to electrostatic attraction. Assuming no other force to be operative and no radiation taking place, which of the following graphs approximately shows the variation with time (t) of the potential difference (V) between the plates?

WB JEE 2018 Physics - Capacitor Question 9 English Option 1

WB JEE 2018 Physics - Capacitor Question 9 English Option 2

WB JEE 2018 Physics - Capacitor Question 9 English Option 3

WB JEE 2018 Physics - Capacitor Question 9 English Option 4

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