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  In this article, we will study the topic   Electromagnet , How electric motors work? and Law of Electromagnetic Induction from chapter Magnetic effect of current, out of   Class 10 Science . What is Electromagnet? The electromagnet is created by magnetising the magnetic material with a strong magnetic field within the solenoid. A soft iron is one such material. Properties With the increase in electric current, the magnitude of the magnetic field also increases, and vice versa. With an increase in distance, the magnitude of the magnetic field decreases, and vice versa. Magnetic field lines are always parallel. No two lines intersect each other. Force on a current-carrying conductor in a magnetic field As per Andre Marie Ampere (1775-1836), the magnet exerts the equal and opposite force on the current carrying conductor. This is illustrated in the below diagram. In the diagram, the rod experiences the force when it is placed in a magnetic field in a perpendicular directio...

Lifelines of economy – Transport – Class 10 Social science  Class 10 Social science – once we mention the lifelines of the economy – Transport is extremely important. Here we'll discuss all kinds of a transportation that helps within the development of the country. What is transport? Transport refers to the movement of products and other people from one place to a different . There are three modes of transport • Land including Road, rail, and pipeline. • Water including Inland and ocean. • Air including domestic and international. What is communication? Communication refers to the transfer of ideas, messages or information from one place to a different . TV-radio, cell phones, newspapers, magazine, and therefore the internet are different mode of communication. There two sorts of communication • medium that has newspaper, magazines etc. • Electronic media that has TV, radio, and internet. What is Harbour? It refers to the world from where the ship enters the ocean . Itis safe from ...