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Choose the statement which is not correct in the case of an electric fuse.
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Three bulbs A, B, C are connected in a circuit as shown in the following figure. When the switch is ‘ON’
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Name the device used these days in place of electric fuses in electrical circuits.
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Our body is a ______ of electricity.
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In an electric circuit a fuse is a ______ ______ to prevent possible fire.
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Draw the symbols of the following circuit components.
Switch in off position
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A man digging the ground near a water body found that the soil was moist. As he kept digging deeper and deeper he reached a level where all the spaces between particles of soil and gaps between rocks were filled with water. The upper limit of this layer is called
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State whether the following statement is True or False. If false, give the correct statement.
Year 2003 was observed as the International Year of Freshwater
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What is groundwater?
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Which of the following serve as green lungs?
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Name two inorganic impurities present in sewage.
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Name two alternative arrangements for sewage disposal where there is no sewerage system.
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What are the different types of inorganic and organic impurities generally present in sewage?
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The terms sewage, sewers and sewerage are interlinked with each other. Can you explain, how?
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State similarities between the laboratory thermometer and the clinical thermometer.
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Visit a green house if there is one near your place. Observe how they grow plants. Find out how they regulate the amount of light, water and carbon dioxide to grow the plants.
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Collect information about the types of fuels used for cooking in your area. Discuss with your teachers/parents/others which fuels are less polluting and why.
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Set up the circuit shown in Figure again. Move the key to ‘ON’ position and watch carefully in which direction the compass needle gets deflected. Switch ‘OFF’ the current. Now keeping rest of the circuit intact, reverse the connections at the terminal of the cell. Again switch ‘on’ the current. Note the direction in which the needle gets deflected. Think of an explanation.
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