मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता ११ वी

Answer the following question. State the law of conservation of charge. - Physics

Advertisements
Advertisements

प्रश्न

Answer the following question.

State the law of conservation of charge.

टीपा लिहा

उत्तर

In any given physical process, ″the charge may get transferred from one part of the system to another, but the total charge in the system remains constant"

OR

For an isolated system, total charge cannot be created nor destroyed.

shaalaa.com
Basic Properties of Electric Charge
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 10: Electrostatics - Exercises [पृष्ठ २०६]

APPEARS IN

बालभारती Physics [English] 11 Standard Maharashtra State Board
पाठ 10 Electrostatics
Exercises | Q 2. (ii) | पृष्ठ २०६

संबंधित प्रश्‍न

Why can one ignore quantisation of electric charge when dealing with macroscopic i.e., large scale charges?


When a glass rod is rubbed with a silk cloth, charges appear on both. A similar phenomenon is observed with many other pairs of bodies. Explain how this observation is consistent with the law of conservation of charge.


It is now believed that protons and neutrons (which constitute nuclei of ordinary matter) are themselves built out of more elementary units called quarks. A proton and a neutron consist of three quarks each. Two types of quarks, the so called ‘up’ quark (denoted by u) of charge (+2/3) e, and the ‘down’ quark (denoted by d) of charge (−1/3) e, together with electrons build up ordinary matter. (Quarks of other types have also been found which give rise to different unusual varieties of matter.) Suggest a possible quark composition of a proton and neutron.


Consider the situation shown in the figure. What are the signs of q1 and q2? If the lines are drawn in proportion to the charges, what is the ratio q1/q2


A point charge is taken from a point A to a point B in an electric field. Does the work done by the electric field depend on the path of the charge?


When a charged comb is brought near a small piece of paper, it attracts the piece. Does the paper become charged when the comb is brought near it?


A metallic sphere A isolated from ground is charged to +50 μC. This sphere is brought in contact with other isolated metallics sphere B of half the radius of sphere A. The charge on the two-sphere will be now in the ratio


Let x = πR`(("P"^2 - "Q"^2)/2)`, where P, Q and Rare lengths. The physical quantity x is ______.


Conservation of charges in tribo electric charging _________.


Charge is quantized means ______.


Quantisation of charge was experimentally demonstrated by ______.

In annihilation process, in which an electron and a positron transform into two gamma rays, which property of electric charge is displayed?

The number of lines of force that radiate outwards from one coulomb of charge is:-


A glass rod rubbed with silk is used to charge a gold-leaf electroscope and the leaves are observed to diverge. The electroscope thus charged is exposed to X-rays for a short period. Then ______


The dimensions of an atom are of the order of an Angstrom. Thus there must be large electric fields between the protons and electrons. Why, then is the electrostatic field inside a conductor zero?


A paisa coin is made up of Al-Mg alloy and weighs 0.75g. It has a square shape and its diagonal measures 17 mm. It is electrically neutral and contains equal amounts of positive and negative charges.

Treating the paisa coins made up of only Al, find the magnitude of equal number of positive and negative charges. What conclusion do you draw from this magnitude?


Consider a coin of Example 1.20. It is electrically neutral and contains equal amounts of positive and negative charge of magnitude 34.8 kC. Suppose that these equal charges were concentrated in two point charges seperated by (i) 1 cm `(∼ 1/2 xx "diagonal of the one paisa coin")`, (ii) 100 m (~ length of a long 6 building) and (iii) 106 m (radius of the earth). Find the force on each such point charge in each of the three cases. What do you conclude from these results?


Figure represents a crystal unit of cesium chloride, CsCl. The cesium atoms, represented by open circles are situated at the corners of a cube of side 0.40 nm, whereas a Cl atom is situated at the centre of the cube. 

The Cs atoms are deficient in one electron while the Cl atom carries an excess electron.

  1. What is the net electric field on the Cl atom due to eight Cs atoms?
  2. Suppose that the Cs atom at the corner A is missing. What is the net force now on the Cl atom due to seven remaining Cs atoms?

A steady current of 8 mA flows through a wire. The number of electrons passing through a cross-section of the wire in 10 s is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×