How does a magnet work? Attraction and Repulsion of Magnetic Poles When two magnets are brought close to each other, they are either pulled towards each other, or pushed away from each other. When the magnets are pulled towards each other, they are said to attract each other. When they are pushed away from each other, they are said to repel each other. Whether the magnets … [Read more...] about How does a magnet work?
Physics
What Is Measurement In Physics
What Is Measurement In Physics Measurement is the process of finding the length, size, or quantity of a substance. Since ancient times, people have used several ways to measure length. A physical quantity (like length) has to be measured with respect to some fixed quantity. A fixed quantity with respect to which a physical quantity is measured is called a unit. A unit is used … [Read more...] about What Is Measurement In Physics
What Is Heating Effect Of Electric Current
Heating Effect Of Electric Current Try touching a torch bulb that is lit and another that is not. Be careful when you touch the lit bulb. Do you feel it is hot to touch? Why do you think it is so?In a bulb, an electric current passes through a very thin wire made of a special material (such as tungsten) called the filament. When the bulb is switched on, the filament gets … [Read more...] about What Is Heating Effect Of Electric Current
What are the Types of Spherical Lenses
Types of Spherical Lenses Definition: A piece of a transparent medium bounded by at least one spherical surface, is called a spherical lens. An optical lens is made of transparent material such as glass or clear plastic. One or both surfaces usually have a spherical curve. There are two types of lenses, converging and diverging lenses. A converging lens is called a convex … [Read more...] about What are the Types of Spherical Lenses
What Is Magnetic Effect Of Electric Current
Magnetic Effect Of Electric Current You know that magnets can attract certain substances such as iron. So far, you have studied about electricity and magnetism separately. However, did you know that electricity and magnetism are closely related? Perform the following activity to understand this. Activity Aim: To see the magnetic effect of current passing through a wire … [Read more...] about What Is Magnetic Effect Of Electric Current