AIPMT 2015 | Capacitor Question 20 | Physics

AIPMT 2015

MCQ (Single Correct Answer)

-1

A parallel plate air capacitor has capacity C, distance of separation between plates is d and potential difference $$V$$ is applied between the plates. Force of attraction between the plates of the parallel plate air capacitor is

$${{C{V^2}} \over d}$$

$${{{C^2}{V^2}} \over {2{d^2}}}$$

$${{{C^2}{V^2}} \over {2d}}$$

$${{C{V^2}} \over {2d}}$$

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from it. A dielectric slab of dieletric constant K, which can just fill the air gap of the capacitor, is now inserted in it . Which of the following is incorrect ?

The change in energy stored is $${1 \over 2}C{V^2}\left( {{1 \over K} - 1} \right)$$

The charge on the capacitor is not conserved.

The potential difference between the plates decreases K times.

The energy stored in the capaciotor decreases K times.

AIPMT 2014

MCQ (Single Correct Answer)

-1

Two thin dielectric slabs of dielectric constants K₁ and K₂(K₁ < K₂) are inserted between plates of a parallel plate capacitor, as shown in the figure. The variation of electric field E between the plates with distance d as measured from plate P is correctly shown by
AIPMT 2014 Physics - Capacitor Question 30 English

AIPMT 2014 Physics - Capacitor Question 30 English

AIPMT 2014 Physics - Capacitor Question 30 English Option 1

AIPMT 2014 Physics - Capacitor Question 30 English Option 2

AIPMT 2014 Physics - Capacitor Question 30 English Option 3

AIPMT 2014 Physics - Capacitor Question 30 English Option 4

AIPMT 2012 Mains

MCQ (Single Correct Answer)

-1

A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the plates is d and area of each plate is A, the energy stored in the capacitor is

$${1 \over 2}{\varepsilon _0}{E^2}$$

$${{{E^2}Ad} \over {{\varepsilon _0}}}$$

$${1 \over 2}{\varepsilon _0}{E^2}Ad$$

$${\varepsilon _0}EAd$$

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