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Ask QuestionPosted by Varsha Gowda 5 years, 2 months ago
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Posted by Ankita Sharma 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
Given: Two resistors with resistances R1=5ohm and R2=10ohm, V=6volt
(a) For minimum current these two should be connected in series. For maximum current these two should be connected in parallel.
(b)In series,
Total resistance = 5+10 = 15ohms
Therefore total current drawn = V/R = 6/15 = 0.4amps
In parallel,
Total resistance R is given as 1/R=1/R1+1/R2
1/R =1/5+1/10
1/R=3/10
R=10/3 ohm
Therefore total current drawn by the circuit = V/R = 6/(10/3) =1.8amps.
Posted by Satyam Shukla 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
An incident ray is parallel to emergent ray in refraction as the angle of incidence is equal to the angle of emergence.
Let the refractive index of the medium be = u
Snell's law is a theory used to describe the relationship between incidence and refraction angles when referring to light or other waves crossing a boundary between two separate isotropic mediums, such as water, glass or air.
According to snell's law -
sin i/sin r = u --- 1
sin r/ sin e = 1/u -- 2
Multiplying equation 1 and 2 -
= sin i/ sine = 1
= sin i = sin e
Therefore ∠e = ∠i and are parallel.
Gaurav Seth 5 years, 2 months ago
By using Snell theorem of refraction,
n21 = sin i / sin r
n21 = 1 / n12
n12 = sin r / sin e
n21 = sin e / sin r
sin i / sin r = sin e / sin r
Thus, sin i = sin e
Therefore, Incident ray is parallel to emergent ray.
Posted by Tanjeem Tanzu 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
The kidneys remove waste products from metabolism such as urea, uric acid, and creatinine by producing and secreting urine. Urine may also contain sulfate and phenol waste and excess sodium, potassium, and chloride ions. The kidneys help maintain homeostasis by regulating the concentration and volume of body fluid
Posted by Pallavi Katiyar 5 years, 2 months ago
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Geeta Jadav 5 years, 2 months ago
Posted by Geeta Jadav 5 years, 2 months ago
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Paru ? 5 years, 2 months ago
10Th Grader . 5 years, 2 months ago
Posted by J Saiteja 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Electromagnetic waves are also known as EM waves that are produced when an electric field comes in contact with the magnetic field. It can also be said that electromagnetic waves are the composition of oscillating electric and magnetic fields. Electromagnetic waves are solutions of Maxwell’s equations, which are the fundamental equations of electrodynamics.
Maitreyee Sadavarte 5 years, 2 months ago
Posted by Gagan Nauhwar 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
The given circuit is a series circuit.
Properties of a series circuit :
- The current remains the same in all resistors
- The potential difference varies for each resistor depending on current.
So Since the current remains constant, we can calculate the current for the whole circuit and then calculate the potential difference.
According to reference :
Potential Difference = 2 V
Current = ?
Net Effective Resistance = 10 Ω + 5 Ω = 15 Ω
So According to Ohm's Law,
Potential Difference ( V ) = Current ( I ) × Resistance ( R )
=> Current ( I ) = Potential Difference ( V ) / Resistance ( R )
=> Current ( I ) = 2 / 15
=> Current ( I ) = 0.13 A
Hence the current in the series circuit is 0.13 A.
Now The current acting on both resistors will be 0.13 A. So now we must find the Potential Difference acting on the resistors.
So V = I × R
We need to calculate Potential Difference in Resistor 10 Ω .
=> V = 0.13 A × 10 Ω
=> V = 1.3 V
Hence the potential difference at the 10 Ω resistor is 1.3 V.
Posted by Arnirnoy Bhattacharjee 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Joule’s law of heating states that, when a current ‘i ' passes through a conductor of resistance ‘r’ for time ‘t’ then the heat developed in the conductor is equal to the product of the square of the current, the resistance and time.
Posted by Anushika Singhal 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
An oxidizing agent (oxidant), gains electrons and is reduced in a chemical reaction. It is also known as electron acceptor. The oxidizing agent is usually in one of its higher possible oxidation states as it will gain electrons and be reduced.
Examples of oxidizing agents are:
- potassium nitrate
- halogens
- nitric acid
A reducing agent (reductant), loses electrons and is oxidized in a chemical reaction. It is typically in one of its lower possible oxidation states and is known as an electron donor. A reducing agent is oxidized because it loses electrons in the redox reaction.
Examples of reducing agents are:
- formic acid
- the earth metals
- sulfite compounds
Arnirnoy Bhattacharjee 5 years, 2 months ago
Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago
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Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
An aurora is caused by the streams of electrified particles (which are emitted by the sun) trapped in the magnetic field of the earth. It is produced when this magnetosphere is disturbed by the solar wind carrying the charged particles. Auroras are seen in latitudes of around 70 degrees.
Posted by 10Th Grader . 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
The angle of deviation is defined as the angle which is obtained from the difference between the angle of incidence and the angle of refraction created by the ray of light travelling from one medium to another that has a different refractive index.
Posted by Prabodini Nakte 5 years, 2 months ago
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Yashika Gilotra 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
Organisms choose to reproduce asexually by different means. Some of the asexual methods are binary fission (e.g. Amoeba, bacteria), budding (e.g. Hydra), fragmentation (e.g. Planaria), spore formation (e.g. ferns) and vegetative propagation (e.g. Onion).
Paru ? 5 years, 2 months ago
Posted by Rajan Singh 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Refractive index is defined as The ratio of the speed of light in a vacuum to its speed in a specific medium.
Example: The refractive index of glass <i>n</i>g is 1.52 and refractive index of water<i> n</i>w is 1.33. Since the refractive index of glass is higher than the water, the speed of light in water is faster than the speed of light through glass.
Posted by Lucifer??Morningstar?? . 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Tissue culture is a technique in which fragments of plants are cultured and grown in a laboratory. Many times the organs are also used for tissue culture. The media used for the growth of the culture is broth and agar.
This technique is also known as micropropagation. It has proved beneficial for the production of disease-free plants and increase plant yield in developing countries. It only requires a sterile workplace, greenhouse, trained manpower, and a nursery.
Oil palm, banana, eggplant, pineapple, rubber tree, tomato, sweet potato have been produced by tissue culture in the developing countries.
Posted by Paru ? 5 years, 2 months ago
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Posted by Sagar Gurj@R 5 years, 2 months ago
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: (ᵔᴥᵔ) ???? (ᵔᴥᵔ) 5 years, 2 months ago
Posted by Sagar Gurj@R 5 years, 2 months ago
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Posted by Pr@T@Y $H@Rm@ 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Light is a form of energy that produces in us the sensation of sight.
Following are the properties of light:
- Reflection of light: Every light follows the law of reflection which states that the angle of incidence is equal to the angle of reflection.
- Refraction of light: Refraction of light takes places when the light ray changes its velocity it passes from one medium to another. Index of refraction is used as a means to measure how much light refracts.
- Dispersion: Dispersion of light is defined as the process in which the white light separates into different colours based on their wavelength when passed through a glass prism.
Posted by Sagar Gurj@R 5 years, 2 months ago
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: (ᵔᴥᵔ) ???? (ᵔᴥᵔ) 5 years, 2 months ago
Posted by Sagar Gurj@R 5 years, 2 months ago
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Posted by Usha Rani Jena 5 years, 2 months ago
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Vandana 🇮🇳 5 years, 2 months ago
Posted by Raj Anand 5 years, 2 months ago
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Saloni Ghanshala 5 years, 2 months ago
Usha Rani Jena 5 years, 2 months ago
Posted by Anushika Singhal 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
Reducing agent: If a substance gains oxygen or loses hydrogen during a reaction, it is said to be oxidized and is called a reducing agent.
Oxidising agent: If a substance gains hydrogen or loses oxygen during a reaction, it is said to be reduced and is called an oxidizing agent.
Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago
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Pr@T@Y $H@Rm@ 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
Nutrition is the process of intake of nutrients (like carbohydrates, fats, proteins, minerals, vitamins and water) by an organism as well as the utilization of these nutrients by the organism.
Krishna Varshney 5 years, 2 months ago
Posted by Paru ? 5 years, 2 months ago
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Palak Chaudhari 5 years, 2 months ago
Gaurav Seth 5 years, 2 months ago
An electrical fuse is rated as two ampere means that the fuse has a capacity to hold of resist up to 2A current
In simple terms if a wire holds a current value of 2A then the fuse can hold it and will not melt where as if the current in the wire is more than 2A then the fuse will melt instantly and break the circuit
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Meghna Thapar 5 years, 2 months ago
Nitrogen and phosphorus are two very important nutrients when fertilizing seedlings. This can be found in most common fertilizers that are designed to promote plant growth. The embryo is the fertilised ovule, an immature plant from which a new plant will grow under proper conditions. The embryo has one cotyledon or seed leaf in monocotyledons, two cotyledons in almost all dicotyledons and two or more in gymnosperms. Environmental factors such as temperature, light, pH, and soil moisture are known to affect seed germination.
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