Electric Charges and Fields Nootan Solutions ISC Physics Class-12

Chapter-1 Numericals Solved Kumar and Mittal Nageen Prakashan

Electric Charges and Fields Nootan Solutions ISC Physics Class-12 Chapter-1 Numericsls. Step by step Solutions of Kumar and Mittal ISC Physics Class-12 Nageen Prakashan Numericsls Questions. Visit official Website CISCE for detail information about ISC Board Class-12 Physics

Electric Charges and Fields Nootan Solutions ISC Physics Class-12 Chapter-1 Numericsls


Class: 12
Subject: Physics
Chapter 1: Electric Charges and Fields
Board ISC
Writer/Publications Nootan / Nageen Prakashan / Kumar & Mittal
Topics Solved Numericals of page 40,41

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Nootan Solutions , Electric Charges and Fields ISC Physics Class-12 -Numericsls Nageen Prakashan, Chapter-1


Electric Charge

The term “electricity” is derived from Electron, a Greek word meaning amber. The properties of matter, atoms and molecules are determined by the magnetic and electric forces present in them. There are also only 2 kinds of an entity called the electric charge.

Conductors and Insulators

When an experiment was conducted on electric charges due to frictional electricity, it was found that conductors assist in the movement of electric charge, but insulators do not behave in the same manner. Metal, Earth, Human Bodies are all examples of conductors, while porcelain, nylon, wood all offer high resistance to the passage of electricity through them, as they are insulators.

What are the properties of Electric charge?

An electric charge has three fundamental properties:

  • Quantization- This property states that the total charge of a body represents the integral multiple of a basic quantum of charge.
  • Additive- This property of electric charges represents the total charge of a body as the algebraic sum all the singular charges acting on the system.
  • Conservation- This property states that the total charge of a system remains unaffected with time. In other words, when objects get charged due to friction, a transfer of charge from the one object to another occurs. Charges can neither be created nor destroyed.

Coulomb’s Law

The coulomb’s law states that the mutual electrostatic force existing between two point charges A and B is proportional to their product which is AB and inversely proportional to the square of the distance between them (rAB).

Properties of Electric Field Lines

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Some of the general properties of field lines are:

  • Field lines show a continuous curve without having any breakage in a charge-free region
  • Two-line never cross each other
  • These electric field lines start on the positive charge and end in the negative charge
  • Electrostatic field lines do not form any closed loops

Electric Flux

The total number of electric field lines passing a given area in a unit time is defined as the electric flux. However, we note that there is no flow of a physically observable quantity like in the case of liquid flow. Coming to the definition,  Electric flux  Δθ through an area element ΔS is defined by

Electric Dipole

It is a pair of equal or opposite charges A and -B which are separated by distance 2x. The dipole moment vector (let’s assume it as p) has a magnitude 2Ax and is in the direction of the dipole axis from -B to A


(page-40)

Questions-1

What……………air.

Answer -1

Numericals -1 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-2

Calculate……………….by ……m.

Answer -2

Numericals -2 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

 

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Questions-3

Calculate……………….by ……m.

Answer -3

Numericals -3 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-4

The mutual…………………sphere.

Answer -4

Numericals -4 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-5

How……………proton.

Answer -5

Numericals -5 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-6

Two positive…………..separate value.

Answer -6

Numericals -6 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-7

The distance………….separately. the charge……is  .

Answer -7

Numericals -7 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-8

Two point……………..new force.

Answer -8

Numericals -8 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-9

Two identical……to earth.

Answer -9

Numericals -9 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-10

Two similarity…………….on C.

Answer -10

Numericals -10 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-11

Two conducting………….force on C.

Answer -11

Numericals -11 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-12

In the adjoining……………….force on B.

Answer -12

Numericals -12 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-13

two point……………..upon it.

Answer -13

Numericals -13 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-14

Two point charge……………equilibrium.

Answer -14

Numericals -14 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-15

Three point charge………..is zero.

Answer -15

Numericals -15 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-16

ABC is an ……………….Placed at A.

Answer -16

Numericals -16 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-17

At each ……………..in equilibrium.

Answer -17

Numericals -17 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-18

An alpha ……………..on the particle.

Answer -18

Numericals -18 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-19

A body……………on the body.

Answer -19

Numericals -19 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-20

What will be ……………proton.

Answer -20

Numericals -20 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-21

Calculate the…………..from the nucleus.

Answer -21

Numericals -21 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12


(page -41)

Questions-22

Two point…………….line joining q1 to q2.

Answer -22

Numericals -22 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-23

Two point  charge…………….away from q1.

Answer -23

Numericals -23 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-24

Two point  charges…..field is zero.

Answer -24

Numericals -24 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

 

Questions-25

Electric charge…………..each charge.

Answer -25

Numericals -25 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-26

A Stationary ………….on the drop.

Answer -26

Numericals -26 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-27

A Charge drop……………….viscous drag.

Answer -27

Numericals -27 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

 

Questions-28

Two charge………….dipole moment.

Answer -28

Numericals -28 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-29

A system has…………..of the system.

Answer -29

Numericals -29 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-30

Two charge ……….of the field?

Answer -30

Numericals -30 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-31

Two point Charge……….how much.

Answer -31

Numericals -31 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

Questions-32

An electrical dipole……………moment of the dipole.

Answer -32

Numericals -32 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

 

Questions-33

Two point Charge………..acting on it.

Answer -33

Numericals -33 Chap-1 Electric Charges and Fields ISC Nootan Physics Class-12

 

— End of Electric Charges and Fields Nootan Solutions :–

 


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