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LAKHMIR SINGH & MANJIT KAUR-Electric Current And its Effects-EXERCISE
- State applications of heating effect of electric current.
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- When does an electric short-circuit occur?
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- Explain the importance of using in a household electric circuit (i) fu...
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- How can overloading in the electric circuit be avoided ?
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- Explain why, any metal wire or metal strip cannot be used in place of ...
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- What type of elastic fuse is used in electrical appliances like car st...
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- What type of elastic fuse is used in electrical appliances like car st...
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- What might happen if a fuse is not inserted in household electric wiri...
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- What might happen if a fuse is not inserted in household electric wiri...
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- Do you think an electromagnet can be used for separating plastic bags ...
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- State the uses of electromagnetic radiations.
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- Why do we use iron for making an electromagnet and not steel ?
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- What is an electromagnet ? Explain in your own words, how to make an e...
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- What type of core is used to make an electromagnet?
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- What is meant by the heating effect of current ? Name two appliances w...
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- Explain why, the current that makes the heater element very hot, only ...
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- What is meant by a battery ? How will you arrange two cells to make a ...
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- Name any five electrical appliances in which the heating effect of cur...
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- When the current is switched on through a wire, a compass needle kept ...
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- At the time of short circuit, the current in the circuit :
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