Introduction All the material objects are composed of extremely small particles called atoms. An atom consists of further smaller particles called electrons, protons, neutrons, etc. Protons
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Electrical Circuit and its Components The path along which electric current flows is called an electrical circuit. Figure shows the flow of electric current from one end of the cell to the other en
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Fuse and its Uses Fuse is a safety device connected in electrical circuits. It is a thin metal wire which allows a specific amount of current to flow through it. If the current exceeds the limit, t
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Static Electricity We have learnt about two types of charges, i.e., positive charge and negative charge. Positive charge appears on an object when it loses electrons. Negative charge appears o
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How do static charges build up? Rubbing of certain materials with one another creates imbalance of positive and negative charges on them. For example, when a plastic comb is rubbed through dry
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Lightning Lightning is an example of static discharge. The patches of clouds during their movement rub against each other. As a result, huge amount of static charges appear on the cloud p
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Electromagnets There is a close relationship between electric current and magnetism. Let us perform an activity to understand the relationship between electric current and magnetism. • Take
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Uses of Electromagnets Electromagnets attract the objects made of iron, nickel and cobalt. They are used widely in our daily life. For example, they are used in magnetic locks, circuit breaker
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