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CBSE Class 8 Answered

Why should materials not be classified as insulators? Can you suggest a more appropriate term instead of 'insulator'?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer
Most substances classified as insulators can actually conduct electricity under special circumstances. Thus the term 'insulator' is misleading. A better term is 'poor conductor'.   
Answered by | 04 Jun, 2014, 03:23: PM

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CBSE 8 - Science
Mam/Sir i also came across another question saying that Which of the following does not conduct electricity? vineger solution sugar solution  lemon juice  solution caustic soda solution shouldn 't it be viniger and sugar.But the ans to this it says sugar solution as electricity vannoth pass through both vineger and sugar solution
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an electric current is passed through a conducting solution.list any three possible observation
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gain ectrons to form negative ions
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what is electroplating?
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Why should materials not be classified as insulators? Can you suggest a more appropriate term instead of 'insulator'?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 8 - Science
If a bulb based tester shows no deflection, what possible conclusions can be drawn? How will you check which of these is actually the correct conclusion.
Asked by Topperlearning User | 22 Nov, 2013, 02:38: AM
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CBSE 8 - Science
Mention three common solutions that are good conductors of electric current. What is common in these solutions?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 8 - Science
Distilled water is a poor conductor of electric current. Then why should we never touch electrical appliances with wet hands?
Asked by Topperlearning User | 13 May, 2014, 04:25: PM
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CBSE 8 - Science
Can a solution, which is a poor conductor of electricity according to our testers, ever allow electric current to pass through it? Give a common example.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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