Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 22

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Two charges are placed a certain distance apart in air. When a dielectric sheet is placed between them, the electrostatic force between them will

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Important Questions on Electrostatics

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 23

A body has

- 80

micro coulomb of charge. The number of additional electrons in it will be

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 24

A charge $Q_{1}$ exerts some force on a second charge $Q_{2} .$ If a third charge $Q_{3}$ is brought near, the force of $Q_{1}$ exerted on $Q_{2}$ :

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 25

Two parallel plate air capacitors of the same capacity

C

are connected in series to a battery of emf

E

. Then one of the capacitors is completely filled with the dielectric material of constant

K

. The change in the effective capacitance of the series combination is

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 26

For a polar molecule, which of the following statements is true?

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 27

A

60 μF

parallel plate capacitor whose plates are separated by

6 mm

is charged to

250 V

, and then the charging source is removed. When a slab of dielectric constant

5

and thickness

3 mm

is placed between the plates, find the change in the potential difference across the capacitor?

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 28

The distance between plates of a parallel plate capacitor is

d

. Another thick metal plate of thickness

\frac{d}{2}

and area same as that of the plates is so placed between the plates, that it does not touch the plates. The capacity of the resultant capacitor

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 29

Can a metal be used as a medium for dielectric?

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 30

Two parallel metal plates having charges

+ Q

and

- Q

face each other at a certain distance between them. If the plates are now dipped in kerosene oil tank, the electric field between the plates will ?