NEET 2022 Phase 2 | Capacitor Question 10 | Physics

The distance between the two plates of a parallel plate capacitor is doubled and the area of each plate is halved. If C is its initial capacitance, its final capacitance is equal to

$${C \over 4}$$

$${C \over 2}$$

NEET 2022 Phase 2

MCQ (Single Correct Answer)

-1

The effective capacitances of two capacitors are 3 $$\mu$$F and 16 $$\mu$$F, when they are connected in series and parallel respectively. The capacitance of two capacitors are :

1.2 $$\mu$$F, 1.8 $$\mu$$F

10 $$\mu$$F, 6 $$\mu$$F

8 $$\mu$$F, 8 $$\mu$$F

12 $$\mu$$F, 4 $$\mu$$F

NEET 2022 Phase 1

MCQ (Single Correct Answer)

-1

A capacitor of capacitance C = 900 pF is charged fully by 100 V battery B as shown in figure (a). Then it is disconnected from the battery and connected to another uncharged capacitor of capacitance C = 900 pF as shown in figure (b). The electrostatic energy stored by the system (b) is

NEET 2022 Phase 1 Physics - Capacitor Question 12 English

4.5 $$\times$$ 10^$$-$$6 J

3.25 $$\times$$ 10^$$-$$6 J

2.25 $$\times$$ 10^$$-$$6 J

1.5 $$\times$$ 10^$$-$$6 J

NEET 2021

MCQ (Single Correct Answer)

-1

A parallel plate capacitor has a uniform electric field $$\overrightarrow E $$ in the space between the plates. If the distance between the plates is 'd' and the area of each plate is 'A', the energy stored in the capacitor is : ($$\varepsilon $$₀ = permittivity of free space)

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

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

$${\varepsilon _0}EAd$$

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

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