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Mark Out the Correct Options. - Physics

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प्रश्न

Mark out the correct options.

पर्याय

  •  The total charge of the universe is constant.

  • The total positive charge of the universe is constant.

  •  The total negative charge of the universe is constant.

  • The total number of charged particles in the universe is constant.

MCQ

उत्तर

The total charge of the universe is constant.

According to the principal of conservation of charge, the net amount of positive charge minus the net amount of negative charge in the universe is always constant. Thus, the total charge of the universe is constant. The total positive charge of the universe may increase or decrease, depending on the total increase or decrease in negative charge. This is the principle of conservation of charge that is universal in nature.

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पाठ 7: Electric Field and Potential - MCQ [पृष्ठ १२०]

APPEARS IN

एचसी वर्मा Concepts of Physics Vol. 2 [English] Class 11 and 12
पाठ 7 Electric Field and Potential
MCQ | Q 1 | पृष्ठ १२०

संबंधित प्रश्‍न

Two large conducting plates are placed parallel to each other with a separation of 2⋅00 cm between them. An electron starting from rest near one of the plates reaches the other plate in 2⋅00 microseconds. Find the surface charge density on the inner surfaces.


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A charge of + 7 μC is placed at the centre of two concentric spheres with radius 2.0 cm and 4.0 cm respectively. The ratio of the flux through them will be


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Two point charges of +5 μC are so placed that they experience a force of 8.0 × 10-3N. They are then moved apart so that the force is now 2.0 × 10-3N. The distance between them is now


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A conducting sphere of radius 0.104 m has an unknown charge. If the electric field at 0.20 m from the centre of the sphere is 1.5 x 103 NC-1 and points radially inward, what is the electric flux?


Charge is the property associated with matter due to which it produces and experiences ______.

Charge is ______.

If an object possesses an electric charge, it is said to be electrified or ... A ... When it has no charge, it is said to be ... B ... Here, A and B refer to ______.

When some charge is transferred to ...A... it readily gets distributed over the entire surface of ... A... If some charge is put on ... B..., it stays at the same place. Here, A and B refer to ______.

A solid sphere of radius R1 and volume charge density `rho = rho_0/"r"` is enclosed by a hollow sphere of radius R2 with negative surface charge density σ, such that the total charge in the system is zero. `rho_0` is a positive constant and r is the distance from the center of the sphere. The ratio R2/R1 is ______.


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Electric field lines provide information about ______.


When a glass rod is rubbed with silk, it ______. 


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Given below are two statements:

  • Statement I: The electric force changes the speed of the charged particle and hence changes its kinetic energy; whereas the magnetic force does not change the kinetic energy of the charged particle.
  • Statement II: The electric force accelerates the positively charged particle perpendicular to the direction of the electric field. The magnetic force accelerates the moving charged particle along the direction of the magnetic field.

In light of the above statements, choose the most appropriate answer from the options given below.


A certain charge Q is divided into two parts q and (Q - q). How should the charges Q and q be divided so that q and (Q - q) placed at a certain distance apart experience maximum electrostatic repulsion?


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A particle of mass m and charge q is placed at rest in a uniform electric field E and then released. The kinetic energy gained by the particle after moving a distance of y will be ______.


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