Battery Source = 12 V

=> V = 12 V

Total Current = 9 A

Total Resistance = R  

V = IR

=> 12  = 9R

=> 4 = 3R

=> R = 4/3  

R1  & R2 are in Parallel

Hence

1/R   =  1/R1  + 1/R2

=> 1/(4/3)  = 1/4  + 1/R2

=> 3/4  = 1/4 + 1/R2

=> 2/4  = 1/R2

=> 1/2 = 1/R2

=> R2  = 2

Stress drive from Latin words 'strictus' meaning tight or narrow and 'stringere', the verb meaning to tighten. These root words reflect the internal feelings of tightness and constriction of the muscles and breathing.

Stress is often explained in terms of characteristics of the environment that are disruptive to the individual.

There are three major types of stress, viz. physical and environmental, psychological and social.

1. Physical and Environmental Stress:

Physical stresses are demands that change the state of our body. For example, disabilities, malnutrition, injury, etc.

Environmental stresses are aspects of our surroundings that are often unavoidable such as air-pollution, noise, crowding, heat, etc. They can also be catastrophic events or disasters such as fires, earthquakes or floods.

2. Psychological Stress Internal Sources of Stress:

This is stress that we generate ourselves in our minds. These are personal and unique to the person experiencing them and are internal sources of stress. Some of these are:

(a) Frustation: Results from the blocking of needs and motives by something or someone that hinders us from achieving a desired goal. There could be a number of causes of frustration such as social discrimination, inter-personal hurt, low grades in school, etc.

(b) Conflict: It may occur between two or more incompatible needs or motives. e.g., whether to study psychology or sociology.

(c) Pressure:

I. How to make notes:

1. Read the passage carefully.

2. Give a heading to your work. The heading will be based on the following considerations.
(i) What is the main idea of the passage?
(ii) Frame a heading based on the main idea.
(iii) Write it in the middle of the page.

3. Give subheadings
(i) How has the main idea been presented and developed?
(ii) Are there two or three subordinate/associated ideas?
(iii) Frame subheadings based on these.

4. Points are to be noted under each subheading.

Are there further details or points of the subtitles that you wish to keep in these notes? These are called points. Points may have subpoints.

5. All subheadings should be at a uniform distance from the margin.
6. Indenting – Points should also be at the same distance away from the margin.
7. Do not write complete sentences.
8. Abbreviations should be used.

II. Help with abbreviations:

1. Use standard abbreviations and symbols as far as possible.

(i) Capitalise the first letters of the names of states, countries or organisations.
For example: UP, USA, UK and UNO.

(ii) Common abbreviations
Sc. (for science), Mr, Mrs, Dr, govt, BSc, etc.

(iii) Common symbols such as i.e., e.g., Rx, /, ∴ , +ve, -ve, → (leading to) ↑ (rising), ↓ (falling), =, >, <

(iv) Measurements and figures – 100″, 100′, 100 kg, 100 mm, 100 mL.

2. Make your own abbreviations.

(i) Keep the main sounds of the words: edn (education), progm. (programme).
(ii) It is a good practice to keep the first few and the last letters of the word such as education – edu’n, developing – dev’ing. Retain the suffix so that later when you are going over the notes, you may recall the full form of the word, for example: ed’nal (educational), prog’ve (progressive).

3. Take the following caution:

(i) Do not get overenthusiastic about abbreviations.
(ii) You should not abbreviate every word.
(iii) One abbreviation in one point is enough.
(iv) As a general rule, the heading should not be abbreviated.
(v) You may use abbreviations in subheadings.

III. Your notes should look like this:

(i) Indenting is essential.

Notice that indenting, i.e. shifting from the margin, has been used to clearly indicate subheadings, points and subpoints. Subheadings, though separated by points, occur below one another. Similarly, points and subpoints should also come below one another. Such use of indenting gives your notes a visual character. At a glance, you can see the main idea and its various aspects.

(ii) Numbering-You may follow any system but you should be consistent, that is, you should follow the same system throughout. Some examples are given below.

IV. Abbreviations:

Note-making is an informal exercise as it is meant for your use only. You will not present a formal document in note form. Notes will be developed into a more formal piece of writing. Since notes are informal and are meant for your use only, you can abbreviate long words or use accepted abbreviations and symbols.

Writing a summary: The summary is an abstract of the passage. Expand your heading and subheadings and write down the ideas developed in the passage in the specified word limit.g

Spermiogenesis is the process by which haploid round spermatids complete an extraordinary series of events to become streamlined spermatozoa capable of motility. Spermiogenesis begins after spermatocytes complete 2 quick successive meiotic reductive divisions to produce haploid round spermatids.

Agricultural prosperity went hand in hand with political stability.

In many areas, especially in the Nile valley, the state supported : irrigation systems, the construction of dams and canals, and the digging of wells, all of which are crucial for harvests.

Many new crops such as cotton, oranges, bananas, and watermelons etc. were grown and even exported to Europe.

answer

Sticky keys are keys such as alt, ctrl, shift which are pressed once and the function is activated or deactivated only until they are pressed .

Toggle keys are for people who are visually challenged and they can feel them to work.

Toggle keys like num lock, caps lock are keys which are only pressed once to activate the function unlike sticky keys and only pressed again if the same function is to be deactivated.

• Blood coagulation or clotting is the mechanism to prevent excessive loss of blood from the body.
• Reddish brown scum formed at the site of a cut is due to clot formed mainly of a network of threads called fibrins in which dead and damaged formed elements of blood are trapped.
• Fibrins are formed by the conversion of inactive fibrinogens in the plasma by the enzyme thrombin.
• Thrombins are formed from another inactive substance present in the plasma called prothrombin by an enzyme complex known as thrombokinase.
• Calcium ions play a very important role in clotting.

India’s population is 17.5% of the world population, while the area of India is just 2.4% of the total area of the world. India is projected to surpass China to become the most populous country of the world by 2025.

The population density in India is 382 persons per sq km. Bihar has the highest population density which is 1102 persons per sq km. Arunachal Pradesh has the least population density which is 17 persons per sq km. About 50% of India’s population lives in the five states of Uttar Pradesh, Bihar, West Bengal, Maharashtra and Andhra Pradesh. Rajasthan which is the biggest state comprises just 5% of the population of India.

83, Model Town, Guwahati,

Assam

Date- 08.02.2020

To

The Principal

Rangshala School,

P-569 Lake Road

Guwahati

         Sub: Applying for the post of sports teacher

Respected sir,

         I am Ajoy Sarkar, a sports enthusiast. I want to apply for the post of Sports teacher in your school.

          I came across an advertisement for the post of Sports teacher in your school. My qualification matches with all your requirements. I want to apply for this post. I have attached all the documents and certificates with the letter.

         I would be obliged if you consider me for this post.

Yours faithfully,

Ajoy Sarkar

Bio data hints

• Bio-data- (refer to the visual cue)
→ Qualifications and experience that match the job profile- e.g.- holds a Master’s degree in Physical Education, has prior experience as a sports teacher in a school.
→ References

Working Principle of Cyclotron

• A cyclotron accelerates a charged particle beam using a high frequency alternating voltage which is applied between two hollow “D”-shaped sheet metal electrodes known as the “dees” inside a vacuum chamber.
• The dees are placed face to face with a narrow gap between them, creating a cylindrical space within them for particles to move. Particles are injected into the center of this space.
• Dees are located between the poles of electromagnet which applies a static magnetic field B perpendicular to the electrode plane.
• The magnetic field causes the path of the particle to bend in a circle due to the Lorentz force perpendicular to their direction of motion.
• An alternating voltage of several thousand volts are applied between the dees. The voltage creates an oscillating electric field in the gap between the dees that accelerates the particles.
• The frequency of the voltage is set so that particles make one circuit during a single cycle of the voltage. To achieve this condition, the frequency must be set to particle’s cyclotron frequency.

Liquid pressure increases with increasing depth. To withstand the greater pressure at the bottom of a water reservoir, dams are thicker at the bottom than at the top.

Isoelectronic species: These are those species which have the same number of electrons.They are the ions of different elements which have same number of electrons but differ from one another in magnitude of nuclear charge.

Examples of isoelectronic species with 10 electrons:N^3-,O^2-,F^-

The Textile industry occupies a unique position in the Indian Economy because:

1. It contributes significantly to industrial production (14%).
2. It employs largest number of people after agriculture, i.e. 35 million persons directly.
3. Its share in the foreign exchange earnings is significant at about 24.6%.
4. It contributes 4% towards GDP.
5. It is the only industry in the country which is self-reliant and complete in the value chain, i.e., from raw material to the highest value added products.

A. Letter of Enquiry

As the name suggests this type of letter is the source of collecting information. People usually use a letter of inquiry as one of the most used business letter or formal letter.

B. Order Letter

When a buyer needs to order some goods, he writes an order letter to the seller. The three main parts of this letter are

• The details of the items or the goods being ordered must be clearly stated. It must have complete information like the quantity of the goods, model number (if possible), etc.
• The information related to the shipping must also be clearly given. The mode of shipping, shipping location and the desired date for the goods to be shipped must be clearly stated.