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Ask QuestionPosted by Durgesh Nishad 5 years, 2 months ago
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Bezzam Stark 5 years, 2 months ago
Posted by Chandan Hajong 5 years, 2 months ago
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Posted by Supriya Goyat 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Static electricity is an imbalance of electric charges with in or on the surface of a material. The charge remains until it is able to move away by means of an electric current or electric discharge.
Angel James 5 years, 2 months ago
Posted by Akanksha Dwivedi 5 years, 2 months ago
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Posted by Devil ? 5 years, 2 months ago
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Devil ? 5 years, 2 months ago
Posted by Sreelatha Rk 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
Q u s t i o n : What capacitance is required to store an energy of 100 k W h at a potential difference of 104 V ?
A n s w e r :
= 1/2 CV2 = 100 × 103 × 3600
⇒ C = (200 × 103 × 3600)/(104)2 = 7.2 F
Posted by Shashidhar Shashidhar 5 years, 2 months ago
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Posted by Bhargav Rajput? 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Zeise's salt, potassium trichloro(ethene)platinate(II), is the organometallic compound with the formula K[PtCl3.C2H4].
Posted by Saloni Chaudhary 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
If the applied reverse voltage is increased gradually, then a stage is reached when covalent bonds in semiconductor are broken and a large number of charge carriers (electron-hole pair) are generated which give rise to a sharp increase in reverse current. This phenomenon is called breakdown .The voltage at which breakdown occurs is called breakdown voltage.
Posted by Ash Singh 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
In this process, a charged object is brought near but not touched to a neutral conducting object. The presence of a charged object near a neutral conductor will induce (force) electrons within the conductor to move. Induction charging is a method used to charge an object without actually touching the object to any other charged object. An understanding of charging by induction requires an understanding of the nature of a conductor and an understanding of the polarization process.
Posted by Prabhat Tiwari 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
The charge generating electric field is called source charge and the charge which experiences this field is called test charge. Practically, to keep source charge undisturbed due to the electric field of test charge, the test charge is kept infinitely small.
Posted by Rock ×Himanshu 5 years, 2 months ago
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Rock ×Himanshu 5 years, 2 months ago
Ekta Rajpoot 5 years, 2 months ago
Rock ×Himanshu 5 years, 2 months ago
Ekta Rajpoot 5 years, 2 months ago
Posted by Ekta Rajpoot 5 years, 2 months ago
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Rock ×Himanshu 5 years, 2 months ago
Posted by Ekta Rajpoot 5 years, 2 months ago
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Rock ×Himanshu 5 years, 2 months ago
Posted by Asha Sharma 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
180g of water = 10moles of water
Each mole has 10 atoms....
in 1 mole of water , 6.022.10^23 particles
so in 10 moles containing 10 atoms...
protons/electrons = 6.022.10^25
also q=+ne
q= 9.6.10^6 C
Posted by Nandika Rana 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Electric Field
- Electric field is a force produced by a charge near its surroundings. This force is exerted on other charges when brought in the vicinity of this field.
- SI unit of electric field is N/C (Force/Charge).
- Electric field due to a charge at a point is the force that a unit positive charge would experience if placed at that point.
Posted by Shraddha Rathore 5 years, 2 months ago
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Posted by Preety Th 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
(a) The image formed in front of the concave mirror is real, so m is negative,
m = -3, u = -10 cm
As m = -v/u or -3 = -v/-10
v = -30 cm
By mirror formula,
1/f = 1/v + 1/u = 1/-30 + 1/-10 = -4/30
or f = -30/4 = -7.5 cm
Radius of curvature, R = 2f = 2 x (-7.5) = 15cm
Posted by Adnan Ul Haq 5 years, 2 months ago
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Umang Singh 5 years, 2 months ago
Gaurav Seth 5 years, 2 months ago
Coulomb's law states that the electrostatic force between between two point charges is directly proportional to the product of charge and inversely prportional to tthe square of distance between them.
Yogita Ingle 5 years, 2 months ago
Coulomb’s Law
Coulomb’s law states that Force exerted between two point charges:
- Is inversely proportional to square of the distance between these charges and
- Is directly proportional to product of magnitude of the two charges
- Acts along the line joining the two point charges.
Posted by Javed Akthar 5 years, 2 months ago
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Suvarna ? 5 years, 2 months ago
Gaurav Seth 5 years, 2 months ago
The limitations of Ohm's law are explained as follows:
- This law cannot be applied to unilateral networks. A unilateral network has unilateral elements like diode, transistors, etc., which do not have same voltage current relation for both directions of current.
- Ohm's law is also not applicable for non – linear elements. Non-linear elements are those which do not have current exactly proportional to the applied voltage, that means the resistance value of those elements changes for different values of voltage and current. Examples of non – linear elements are thyristor, electric arc, etc.
Posted by Shivani Gupta 5 years, 2 months ago
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Abhi Singh 5 years, 2 months ago
Posted by Nandhini Arivalagan 5 years, 2 months ago
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Iitian Satyam Maurya 5 years, 2 months ago
Rishab Jain 5 years, 2 months ago
Posted by Smile Josan 5 years, 2 months ago
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Posted by Unnati Kumari 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
he relationship between critical angle and refractive index can be derived as –
Consider a ray of light,
- Let the angle of incidence i be critical angle C.
- Let the angle of refraction r=900
- Refractive index of the rarer medium be μa
- Refractive index of the denser medium be μb
Applying Snells Law
- sini/sinr=μa/μb
- ⇒μbsinC=μasin900
- ⇒μb/μa=1/sinC
Thus, we arrive at formula expressing the critical angle and refractive index relation –
μab=1/sinC
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Sia ? 4 years, 5 months ago
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