Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan Chapter-4 Solved Numericals. Step by step Solutions of Kumar and Mittal ISC Physics Class-12 Nageen Prakashan Numerical Questions. Visit official Website CISCE for detail information about ISC Board Class-12 Physics

Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan Chapter-4 Solved Numericals of Kumar and Mittal

 

Class: 12
Subject: Physics
Chapter 3: Capacitors and Dielectrics
Board ISC
Writer /Publications Nootan / Nageen Prakashan / Kumar and Mittal
Topics Solved Numericals of page 163 , 164,165, 166

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What is a Capacitor?

The capacitor is a device in which electrical energy can be stored. It is an arrangement of two-conductor generally carrying charges of equal magnitudes and opposite sign and separated by an insulating medium. The non-conductive region can either be an electric insulator or vacuum such as glass, paper, air or semi-conductor called as a dielectric.

Capacitor vary in shape and size, they have many important applications in electronics.

What are Capacitors Used For?

  • Storing electric potential energy such as batteries.
  • Filtering out unwanted frequency signals
  • Delaying voltage changes when coupled with resistors.
  • Used as a sensing device.
  • Also Used in the audio system of the vehicle.
  • and Used to separate AC and DC.

Charge on Capacitor

Note: Charge on the capacitor is Q.

Total charge/ the net charge on the capacitor is –Q + Q = 0.

Capacitance

The charge on the capacitor (Q) is directly proportional to the potential difference (V) between the plates i.e. Q\alpha V or Q = CV

The constant of proportionality (C) is termed as the capacitance of the capacitor.

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Dimensional Formula and Unit of Capacitance

  • Unit of Capacitance: Farad (F)

The capacitor value can vary from a fraction of pico-farad to more than a micro Farad. Voltage level can range from a couple to a substantial couple of hundred thousand volts

Factors Affecting the Capacitance

Capacitance depends on the following factor:

  1. Shape and size of the conductor
  2. Medium between them
  3. Presence of other conductors near it.

Calculation of Capacitance

We will try to calculate the capacitance of differently shaped capacitors, the steps are followed;

  1. Assume the charge on the conductors(Q)
  2. Calculate the electric field between the plates (E)
  3. Calculate potential difference from electric field(V)

Types of Capacitor

  • Parallel Plate Capacitor
  • Spherical capacitor
  • Cylindrical capacitor

Solved Numericals of Capacitors and Dielectrics Nootan Solutions, Nageen Prakashan Kumar and Mittal

( Page – 163 )

Question 1

A Capacitor  …………………the Capacitor .

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Answer

Ans 1 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 2

The Capacitor ………………… diameter ?

Answer

Ans 2 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

( Page -164 )

Question 3

A PD ………………..each plate .

Answer

Ans 3 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 4

What distance………………….a = 0.5 m ?

Answer

Ans 4 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 5

An air …………………………..Capacitor ?

Answer

Ans 5 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 6

The area …………………constant .

Answer

Ans 6 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 7

How much ……………………….0.025 mm ?

Answer

Ans 7 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 8

We have ……………….Capacitance ?

Answer

Ans 8 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 9

The potential ……………… same Charge ?

Answer

Ans 9 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 10

A paper……………………….Capacitor ?

Answer

Ans 10 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 11

When a ……………………..Capacitor ?

Answer

Ans 11 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 12

(a) A parallel …………………… find .

(i)…………….

(ii)…………….

(iii)……………..

(b)………………

Answer

Ans 12 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 13

(a) A parallel …………………to 400 V .

(b) ……………………..

Answer

Ans 13 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 14

A parallel …………..stored energy ?

Answer

Ans 14 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 15

A 16 …………………plates ?

Answer

Ans 15 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 16

A 6 ……………………….energy .

Answer

Ans 16 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 17

The capacitance …………….. …..energy – change .

Answer

Ans 17 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 18

The capacitance……………………neglected .

Answer

Ans 18 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 19

Three equal …………….series . find

(a)…………

(b)……………

Answer

Ans 19 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 20

Three capacitors ……………………..100 V supply .

Answer

Ans 20 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 21

Two capacitors……………………………..Capacitance ?

Answer

Ans 21 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan


( Page -165 )

Question 22

How and ………………..of 75 microC .

Answer

Ans 22 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 23

We have ………………..them ?

Answer

Ans 23 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 24

Three equal ………………………..series ?

Answer

Ans 24 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 25

Two parallel ……………………….capacitors .

Answer

Ans 25 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 26

A 0.2 ……………………………… Potential ?

Answer

Ans 26 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 27

A 80 ………………………….capacitor .

Answer

Ans 27 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 28

Two capacitor ……………………..find .

(i)…………………….

(ii)……………………

Answer

Ans 28 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 29

A 2 ……………………..in it ?

Answer

Ans 29 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 30

Three are …………………….stored .

Answer

Ans 30 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 31

Four capacitor…………………capacitor ?

Answer

Ans 31 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 32

A potential ……………………capacitors .

Answer

Ans 32 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 33

Two capacitors………………………..capacitor ?

Answer

Ans 33 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 34

Two capacitors ………………………… capacitor .

Answer

Ans 34 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Ans 34 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 35

A 600 pF …………………….energy go ?

Answer

Ans 35 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 36

A 4……………………….. radiation ?

Answer

Ans 36 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 37

A 100 pF …………………to it ?

Answer

Ans 37 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 38

An electronic ……………………… in a flash ?

Answer

Ans 38 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 39

Three …………………….. combination .

Answer

Ans 39 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 40

In the given ………….each capacitor .

Answer

Ans 40 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan


( Page – 166 )

Question 41

Calculate ………………………..is 30 ………….   .

Answer

Ans 41 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 42

Calculate ……………………….combination .

Answer

Ans 42 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 43

In the given …………………….. capacitance .

Answer

Ans 43 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 44

Calculate …………………………… closest to ?

Answer

Ans 44 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 45

Find the ……………………… given circuit .

Answer

Ans 45 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 46

Four capacitors ……………..A and C  ?

Answer

Ans 46 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 47

A parallel plate ……………………….Capacitance ………….. .

Answer

Ans 47 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 48

As shown in ……………………… Capacitance ?

Answer

Ans 48 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

Question 49

In a camera – flash …………………………..of the flash .

Answer

Ans 49 Capacitors and Dielectrics Nootan Solutions ISC Physics Class-12 Nageen Prakashan

 

— End of Capacitors and Dielectrics Nootan Solutions of Numericals :–


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