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Ask QuestionPosted by Shubhanshu Tiwari 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
The SI unit of electric charge is the coulomb which is a derived SI unit and is represented by the symbol C. A coulomb is defined as the amount of charge that passes via electrical conductor carrying one ampere per second.
Posted by Arif Khan 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Protons are the positively charged particles which are present in the nucleus of a hydrogen atom.
The mass of a proton is 1.6726219 × 10-27 kilograms
Posted by Samaira Mohapatra 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
An alpha particle is basically a Helium atom without electrons, and it consist two proton.
Charge On 1 Proton = 1.6×10−19C
Charge on Alpha particle He+2=2 ×1.6×10−19C=3.2×10−19C
Posted by Priyansh Goyal 5 years, 4 months ago
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Arif Khan 5 years, 4 months ago
Pritam Sanyal 5 years, 4 months ago
Taran Chouhan 5 years, 4 months ago
Posted by Priyansh Goyal 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Not just ncert exercise but reading the whole book and its content. We have to put a lot of efforts for scoring good marks. Prepare personalized hand written notes too.
Priyansh Goyal 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
The notes provided by mycbseguide are very useful and beneficial for revision. The notes provided are revision notes and not the comphrensive and detailed notes. You can definitely rely on these notes but with that you have to read NCERT too.
Posted by Nana Li 5 years, 4 months ago
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Posted by Akanksha Jaiswal 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Isobar is that element which differs in the chemical property but has the same physical property. So, we can say that isobars are those elements which have a different atomic number but the same mass number. Their chemical property is different because there is a difference in the number of electrons. It has the same atomic mass but different atomic no. Because an additional number of neutrons compensates the difference in the number of nucleons.
The example of two Isotopes and Isobars is iron and nickel. Both have the same mass number which is 58 whereas the atomic number of iron is 26, and the atomic number of nickel is 28.
? Yang ? 5 years, 4 months ago
Posted by Akanksha Jaiswal 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Isomerism is the phenomenon in which compounds have same molecular formula but different structures and these different structures are called as isomers. Isomers are those that have different physical and chemical properties.
There are two types of isomers:
- Structural isomerism
- Stereoisomerism
Posted by Akanksha Jaiswal 5 years, 4 months ago
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Posted by Akanksha Jaiswal 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Isotones are atoms that have the same neutron number but different proton number. For example, 3616S, 3717Cl, 3818Ar, 3919K and 4020Ca are all isotones of 20 since they all contain 20 neutrons.
? Yang ? 5 years, 4 months ago
Posted by Akanksha Jaiswal 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Isotones are atoms that have the same neutron number but different proton number. For example, 3616S, 3717Cl, 3818Ar, 3919K and 4020Ca are all isotones of 20 since they all contain 20 neutrons.
Amit Swain 5 years, 4 months ago
Posted by Akanksha Jaiswal 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Isomerism is the phenomenon in which compounds have same molecular formula but different structures and these different structures are called as isomers. Isomers are those that have different physical and chemical properties.
There are two types of isomers:
- Structural isomerism
- Stereoisomerism
Posted by Akanksha Jaiswal 5 years, 4 months ago
- 2 answers
Yogita Ingle 5 years, 4 months ago
Isobar is that element which differs in the chemical property but has the same physical property. So, we can say that isobars are those elements which have a different atomic number but the same mass number. Their chemical property is different because there is a difference in the number of electrons. It has the same atomic mass but different atomic no. Because an additional number of neutrons compensates the difference in the number of nucleons.
The example of two Isotopes and Isobars is iron and nickel. Both have the same mass number which is 58 whereas the atomic number of iron is 26, and the atomic number of nickel is 28.
Mahavir Bishnoi 5 years, 4 months ago
Posted by Akanksha Jaiswal 5 years, 4 months ago
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Amit Swain 5 years, 4 months ago
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Arvind Kumar 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Resistivity
- Resistivity is also known as specific resistance.
- It is the resistance of the specific material; also it is specific to a material.
- R=ρ, If A and L =1 in Equation R= ρ (L/A).
- Resistivity is defined as resistance of unit length and unit area of a conductor.
Posted by Enjal Chavda 5 years, 4 months ago
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Shourya Verma 5 years, 4 months ago
Posted by Tejashwa Yadav 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Travelling waves transport energy from one area of space to another, whereas standing waves do not transport energy. Also, points on a standing wave oscillate in phase, whereas on a travelling wave only points a wavelength apart oscillate in phase - the rest on that wavelength oscillate out of phase with the original point.A standing wave is attached to two fixed points, whereas a travelling wave can exist freely.
Posted by Tejashwa Yadav 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Difference between streamline motion and turbulent motion.
i) It is an orderly type of motion in which the liquid flows in parallel layers while, turbulent motion is disorderly type of motion.
ii) Every particle of the liquid follows the path of it's preceeding particle and travel with the same velocity in magnitude and direction whereas, the motion of particles of the liquids becomes different at different points in turbulent flow.
iii) The velocity of streamline flow is less than critical velocity but, in turbulent motion the liquid moves with a velocity greater than the critical velocity of the liquid.
iv) Streamline flow is laminar whereas, turbulent flow is non-laminar.
Posted by Mg G 5 years, 4 months ago
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Unnati Dwivedi 5 years, 4 months ago
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Posted by Aastha Yuli 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
The average velocity attained by some particle such as an electron due to the influence of an electric field is termed as the drift velocity. The movement or the motion of the particles is assumed to be along a plane and hence the motion can also be referred to as the axial drift velocity.
The concept of drift velocity can also be understood by studying or noticing the random motion of free electrons moving around in the conductor. These free electrons keep on moving inside the conductor in a haphazard way with random velocities. At times, a conductor may be subjected to an electric field and as a result of it, some kind of electrical force is exerted on the randomly moving electrons but in the direction of the field. This field forces the electrons to switch towards high potential while maintaining their randomness of motion. Scientifically, we can say that the electrons will drift towards higher potentials with their random motions. Hence, we have seen that every electron will have certain net velocity with which it will move towards the higher potential end of the conductor. This net velocity is termed as the drift velocity of the electrons. Since the electrons are said to be moving with drift velocity, even the current which results due to this drift movement of electrons in an electrically charged conductor is called as the drift current. In fact, every current flowing through the conductor is termed as the drift current.
When the charged particles move around in a conductor, their motion is not in a straight line because of their collision with other particles in the conductor. Therefore, the average speed of the particle in the conductor is taken into consideration. This is termed as the drift velocity.
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Mohammad Yahya Mohammad 5 years, 4 months ago
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