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Ask QuestionPosted by Supriya Tiwari 5 years, 4 months ago
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Rishab Jain 5 years, 4 months ago
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Posted by Dev Dhangar 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Relative permittivity is the factor by which the electric field between the charges is decreased relative to vacuum. Likewise, relative permittivity is the ratio of the capacitance of a capacitor using that material as a dielectric, compared to a similar capacitor that has vacuum as its dielectric.
Posted by Manju Soni 5 years, 4 months ago
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Shraddha Kansal 5 years, 4 months ago
Yogita Ingle 5 years, 4 months ago
The photoelectric effect was originally observed in 1939 and was documented by Heinrich Hertz in 1887. Initially, it was termed as the Hertz effect but later it was called the photoelectric effect.
In 1880 Hertz and Lenard observed that when a clean metallic surface is irradiated by monochromatic light of proper frequency, electrons are emitted from it. This phenomenon of ejection of the electrons from metal surface was called as Photoelectric Effect.
Posted by Abhishek Yadav 5 years, 4 months ago
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Posted by Shraddha Kansal 5 years, 4 months ago
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Rohit Krishna 5 years, 4 months ago
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Rohit Krishna 5 years, 4 months ago
Posted by Kh Kothil Khulpuwa 5 years, 4 months ago
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Meghna Thapar 5 years, 4 months ago
Electricity is the presence and flow of electric charge (electrons) in one direction. ... It is a form of energy which we use to power machines and electrical devices. When electrical charges are not moving, electricity is called static electricity. A current of electricity is a steady flow of electrons. When electrons move from one place to another, round a circuit, they carry electrical energy from place to place like marching ants carrying leaves. Instead of carrying leaves, electrons carry a tiny amount of electric charge. Electricity is a form of energy. Electricity is the flow of electrons. All matter is made up of atoms, and an atom has a center, called a nucleus. The nucleus contains positively charged particles called protons and uncharged particles called neutrons.
Posted by Shraddha Kansal 5 years, 4 months ago
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Rabbit No 5 years, 3 months ago
Neha Tiwari 5 years, 4 months ago
Meghna Thapar 5 years, 4 months ago
Permittivity, also called electric permittivity, is a constant of proportionality that exists between electric displacement and electric field intensity. This constant is equal to approximately 8.85 x 10-12 farad per meter (F/m) in free space (a vacuum). It is the measure of resistance of a medium in an electric field, it is denoted by Greek letter epsilon (ε) More litrelly ,it defined as the “amount of charge (q) needed to generate one unit of electric flux”. In electromagnetism, the absolute permittivity, often simply called permittivity and denoted by the Greek letter ε (epsilon), is a measure of the electric polarizability of a dielectric.
Posted by Shraddha Kansal 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Work function is the minimum amount of energy required to remove an electron to infinity, from the surface of a given metal.
Posted by S. Saver 5 years, 4 months ago
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Siddhi Modi 5 years, 4 months ago
Posted by Anureet Kaur 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Current sensitivity of a galvanometer is defined as the deflection produced in the galvanometer when a unit current flows through it.
<nobr aria-hidden="true">Is=θ/I=nBA/c</nobr>
Where n is no of turns in the coil of galvanometer, B is Magnetic field around coil, A is Area of coil and c is restoring torque per unit twist.
Voltage Sensitivity of a galvanometer is defined as the deflection produced in the galvanometer when a unit voltage is applied across two terminals.
<nobr aria-hidden="true">Vs=θ/V=θ/IR=nBA/cR=Is/R</nobr>
Current sensitivity does not depend upon resistance(R), whereas voltage sensitivity does, as evident from their expressions. Current sensitivity can be increased by increasing the number of turns of the coil. However, this increases the resistance of the coil also(R is proportional to length of conductor). Since voltage sensitivity decreases with increase in resistance of the coil, the effect of increase in number of turns is nullified in the case of voltage sensitivity. Hence, there is no increase in voltage sensitivity.
Riya Rana 5 years, 4 months ago
Posted by Ayushii Pandey 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
An equipotential surface is one where the potential is same at every point on the surface. For a single charge,
- Since r is constant, the equipotential surfaces are concentric spherical surfaces centered at the charge.
- Electric field lines are radial starting from or ending at the charge for positive and negative charges respectively.
Posted by Cheshtha Jain 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
The electrostatic force, also known as the Columb Force is an attractive and repulsive force between particles are caused due to their electric charges. This Columb Interaction is named after the French physicist Charles-Augustin de Coulomb. Electrostatic Force is one of the four fundamental forces of nature. We make use of the Coulomb’s Law to solve the forces created by configurations of charge.
Posted by Siddhi Singh 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Freundlich adsorption Isotherm:
- Freundlich proposed this relation to show a relation between the extent of adsorption and pressure.
If there are solutions involved, the above equations become
Where x -> amount of adsorbate
m-> mass of adsorbent
p-> pressure
C-> concentration of adsorbate
K and n->constants , n>1 always
Posted by Shorif Ali 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
The term "Electric polarization vector",is related with the electromagnetism phenomenon of the physics.
It means that the vector field that denotes the dipole moment of every single dielectric materials which is using in the electro magnetic field or using simply as the electricity conductor.
Posted by Ankit Choudhary 5 years, 4 months ago
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Manisha Raika 5 years, 4 months ago
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