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Class 12th physics notes

Class 12th physics notes

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12 170
المشتركون
-224 ساعات
-407 أيام
-19030 أيام
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Class 12th physics notes
Class 12th physics notes
12 170
Two charges are placed at a distance 'd' apart in a medium of dielectric constant K. If they are placed at the same distance in a vacuum, the force between them will:
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Class 12th physics notes
Class 12th physics notes
12 170
A charge Q is placed at the center of a metallic spherical shell of radius R. The electric field at a distance r from the center where r < R is:
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Class 12th physics notes
Class 12th physics notes
12 170
The quantization of charge implies that charge exists in discrete units which are integral multiples of the fundamental charge of an ______.
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Class 12th physics notes
Class 12th physics notes
12 170
The force experienced per unit positive test charge is known as:
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Class 12th physics notes
Class 12th physics notes
12 170
When a glass rod is rubbed with silk, it:
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Class 12th physics notes
Class 12th physics notes
12 170
Assertion: Electric field lines do not form closed loops. Reason: Electric field is a conservative field.
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Class 12th physics notes
Class 12th physics notes
12 170
What is the electric flux linked with a cube of side 1m, if a point charge of 5.31 x 10⁻⁷ C is placed at its center?
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Class 12th physics notes
Class 12th physics notes
12 170
A hollow metal sphere of radius 10 cm is charged such that the potential on its surface is 80 V. The potential at the center of the sphere is:
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Class 12th physics notes
Class 12th physics notes
12 170
According to Gauss's law, the total electric flux through a closed surface is equal to 1/ε₀ times the total ______ enclosed by the surface.
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Class 12th physics notes
Class 12th physics notes
12 170
The value of absolute permittivity of free space (ε₀) is:
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Class 12th physics notes
Class 12th physics notes
12 170
What is the angle between the electric dipole moment vector and the electric field vector due to the dipole on its equatorial line?
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Class 12th physics notes
Class 12th physics notes
12 170
Assertion: When a body acquires a positive charge, its mass decreases. Reason: A body acquires a positive charge when it loses electrons.
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Class 12th physics notes
Class 12th physics notes
12 170
An electric dipole is placed at an angle of 30° with an electric field of intensity 2 x 10^5 N/C. It experiences a torque of 4 Nm. The charge on the dipole, if the dipole length is 2 cm, is:
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Class 12th physics notes
Class 12th physics notes
12 170
Electric field lines provide information about:
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Class 12th physics notes
Class 12th physics notes
12 170
Two point charges +3 μC and +8 μC repel each other with a force of 40 N. If a charge of -5 μC is added to each of them, then the force between them will become:
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Class 12th physics notes
Class 12th physics notes
12 170
The process of sharing electric charges with the earth is called ______.
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Class 12th physics notes
Class 12th physics notes
12 170
The electric field inside a uniformly charged thin spherical shell is:
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Class 12th physics notes
Class 12th physics notes
12 170
A charge q is placed at the center of the line joining two identical charges Q. The system of three charges will be in equilibrium if q is equal to:
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Class 12th physics notes
Class 12th physics notes
12 170
What is the SI unit of electric charge?
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Class 12th physics notes
Class 12th physics notes
12 170
The property that differentiates two kinds of charges is called the:
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