Recent Post

Biodiversity

Learning Outcomes  👉 What is biodiversity  👉 Origin of biodiversity  👉 Nature of biodiversity  👉 Interrelationships of organisms  👉 How to measure biodiversity  👉 Biodiversity of Bangladesh  👉 Risks and remedies of biodiversity  What is Biodiversity? The term biodiversity describes the great variety of life on Earth. Biodiversity refers to the variety of living things, including plants, animals, and microorganisms. We don't know for sure exactly how many different organisms there are on Earth. However, scientists estimate that there are about 8-14 million (80 to 140 lakh) different species of organisms on this Earth. Some believe that the number is higher. But whatever the number, most of these organisms are unknown to us. Only 1.2 million (12 lakh) species have been identified and described so far, most of which are insects. This means that billions of other organisms are still mysterious and unknown to us. Origin of Biodiversity The unique characteristics of all sp
Post a Comment

Magnetic Effects of Electric Current and Magnetism

Magnetic Effects of Electric Current and Magnetism Notes for Class 11 - 12

Ampere's Law

The line integral of the magnetic field in a continuous closed path or loop is µ₀ times the total electric current passed in the region enclosed by the path.

Tesla

When 1 coulomb of charge moves at a velocity of 1 ms-1 perpendicularly to the direction of a magnetic field experiencing 1 N of force, the magnetic of that magnetic field is called 1 tesla (T).

Hall effect and Hall voltage

When an electric conductor is set up perpendicularly at a magnetic field, a potential difference develops perpendicular to both electric current and magnetic field. This is the Hall effect and the produced potential difference is called voltage or Hall voltage.

Magnetic Axis

An imaginary line joining the two poles of a terrestrial magnet is called the magnetic axis.

Magnetic Middle Plain

The imaginary plane perpendicular to the magnetic axis at the midpoint is called the magnetic middle plane.

Geographical axis

An imaginary line joining the two geographical poles is called the geographical axis.

Geographical middle plain

An imaginary perpendicular plain at the midpoint of the geographical axis is called the geographical middle plain.

The horizontal component of the terrestrial magnetic field 

The component of the terrestrial magnetic field at any point along the horizontal line is called the horizontal component (H) at the particular point of that field.

Hysteresis

From the H-I graph, it is observed that the intensity of magnetization (I) is always lower than the intensity (H). This phenomenon is called hysteresis.

Topic :

Comments

Post a Comment

Popular Posts

Electromagnetic Induction and Alternating Current

Electromagnetic Induction and Alternating Current Notes for Class 11 - 12 Learning Outcomes Electromagnetic Induction Generating Electricity with Magnet Induced Electromotive Force Faraday's Laws of Electromagnetic Induction Lenz's Law Lenz's Law and Conservation of Energy Self Induction and Mutual Induction Generating of Alternating Current Root Mean Square Value, Peak Value and Current Electromagnetic Induction The process of inducing temporary electromotive force or electricity by means of a moving magnet or current-conducting coil in a closed circuit is called electromagnetic induction. Electromagnetic induction is a phenomenon discovered by Michael Faraday in the 19th century, which explains the relationship between electricity and magnetism. It refers to the production of an electrical voltage or current in a conductor as a result of a changing magnetic field in its vicinity. This process is the basis of many important technological applications, including electric ge
Read more

The Importance of Information and Communication Technology

The Importance of Information and Communication Technology Information and Communication Technology (ICT) refers to the use of technology to manage and exchange information. In the modern world, ICT has become an indispensable tool for individuals, businesses, and organizations alike. Its impact on society has been significant, leading to the creation of new opportunities, improved efficiency, and increased connectivity. One of the key benefits of ICT is the increase in efficiency that it has brought about. With the help of technology, information can be processed, analyzed, and shared more quickly and accurately than ever before. This has led to improved productivity and a more streamlined workflow. For example, businesses are now able to automate repetitive tasks and focus on more important tasks, leading to more efficient use of time and resources. Additionally, ICT has enabled the creation of virtual work environments, which has allowed individuals to work remotely and busines
Read more

When you open the gas cylinder used for cooking, which action takes place first diffusion or effusion?

When you open the gas cylinder used for cooking, which action takes place first diffusion or effusion? The pressures of the ingredients of body spray inside and outside of the container are not the same. The pressure is greater inside the container. When the molecules of the gas come out through small pores into a low-pressure zone from a high-pressure zone, effusion happens. Due to the application of pressure, the molecules present in body spray come out through the small pores. The spontaneous movement is blocked by the pore of the container. The bigger the pore size, the more spontaneous the movement is. When the condition becomes absolutely pressure-less, it becomes diffusion. So in the case of a body spray, first effusion takes place, then diffusion happens. When you open a gas cylinder used for cooking, effusion takes place first. Effusion refers to the process of a gas molecule escaping through a small opening, such as a hole in a container, into a surrounding environment wi
Read more

Information and Communication Technology

Information and Communication Technology Questions and Answer What is Global Village? The term "global village" refers to the idea that the world has become interconnected and interdependent as a result of advances in communication technology, transportation, and globalization. This term implies that the world has become a smaller place, where people can communicate and interact with each other in real time, regardless of geographical distance. The term was popularized by Canadian media theorist Marshall McLuhan in the 1960s, and it has since been used to describe the growing interconnectedness of the world through the Internet, social media, and other digital technologies. The global village concept has both positive and negative implications. On the positive side, it promotes communication, collaboration, and cultural exchange on a global scale. On the negative side, it also exacerbates economic and social inequalities, as well as environmental degradation, as countries a
Read more

What is Peyote? A Comprehensive Guide

What is Peyote? A Comprehensive Guide Peyote is a small, spineless cactus that has been used for centuries by indigenous people of Mexico and the southwestern United States for its hallucinogenic properties. Today, it is also used by people seeking spiritual or therapeutic experiences. In this comprehensive guide, we will explore what peyote is, its history, effects, legal status, and more. Table of Contents Introduction What is Peyote? History of Peyote Chemical Composition of Peyote How Does Peyote Work? Effects of Peyote Physical Effects Psychological Effects Therapeutic Uses of Peyote Religious and Spiritual Uses of Peyote Legal Status of Peyote Safety and Risks of Peyote Use Peyote vs. Other Hallucinogens How to Take Peyote Peyote and Indigenous Cultures Conclusion FAQs What is Peyote? Peyote, also known as Lophophora williamsii, is a small, spineless cactus that grows in the deserts of Mexico and the southwestern United States. It belongs to the family of Cactaceae and is known f
Read more

Why is the value of g is different in polar, equinoctial and the tropical regions?

Why is the value of g is different in polar, equinoctial, and tropical regions? As the earth is not perfectly round, the polar regions are a bit compressed, therefore the radius of the earth R is not constant. Hence the value of g is not the same at all places on earth. The value of g is different in different places on earth. The value of g is highest in the polar region and it is 9.83217 ms -2 . In the equinoctial region, it is 9.78039 ms -2  and in the tropical region, it is 9.78918 ms -2 . Its value at sea level altitude of 45 degrees is accepted as the standard value. The standard value of g is 9.80665 ms -2 . For convenience, the standard value of g is taken to be 9.8 ms -2  or 9.81 ms -2 . You may like What is the reason behind the attraction between earth and moon? Can we say that acceleration due to gravity is uniform acceleration? If so, then why? Gravity is one kind of gravitation. Explain it. How the skydivers descend safely to the ground with the help of a parachute? 
Read more

What is an induction stove?

Image
What is an induction stove? In an induction stove, a cooking vessel is placed on top of a coil of copper wire with an alternating electric current passing through it. The resulting oscillating magnetic field wirelessly induces an electrical current in the vessel. This large eddy current flowing through the resistance of the vessel results in resistive heating. How does induction cooking work? The flow of an alternating current (AC) creates an electromagnetic field on an induction stovetop that excites the molecules in pots and pans that aren’t good conductors, like iron or steel. When these metal molecules are excited, they heat up quickly. They also cool down quickly. You won’t see the stovetop glow red like you might a standard electric stovetop. And when the molecular connection between cookware and the stovetop is broken, the heat stops being produced. You may like What is a generator? What is the function of a generator? What is Radioactivity? What is electromagnetic inducat
Read more

What is Humulin? Understanding Insulin Therapy

What is Humulin? Understanding Insulin Therapy Introduction Insulin is a hormone produced by the pancreas that helps regulate blood sugar levels. In people with diabetes, their pancreas either does not produce enough insulin or their body does not properly use the insulin it produces. This can lead to high blood sugar levels, which can cause damage to the body over time. Insulin therapy is a common treatment for people with diabetes, and Humulin is one brand of insulin that is available. In this article, we will discuss what Humulin is, how it works, and its benefits and potential side effects. What is Humulin? Humulin is a brand of insulin that is used to treat people with diabetes. It contains a synthetic form of human insulin, which is identical to the insulin produced by the pancreas. Humulin is available in several different formulations, including rapid-acting, short-acting, intermediate-acting, and long-acting. Each formulation has a different onset and duration of action, allow
Read more