1. Which of the following cannot be charged with static electricity:
(a) Metal
(b) Conductor
(c) Alloy
(d) Semiconductor
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semiconductor cannot be charged with static electricity:
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Metals, alloy, conductor and semiconductors cannot charged by static electricity because they are enable to pass electricity.
Metals
- These are good solid material which is able to conduct heat and electricity.
- Metals have tendency to donate electrons .
- They are electropositive .
- Group-I and Group-II in modern periodic table are all metals .
- Example-Sodium , potassium, calcium, Magnesium etc.
Alloy
- Alloys are the metallic substance which are composed of two or more elements.
- Example-
- Steel- Alloy of iron and carbon.
- Bronze - Alloy of tin and copper.
- Nichrome- Alloy of nickel and chromium.
Conductor
- Substance those allows heat and electricity passes from them .
- Example- Copper, gold etc are good conductor of heat and electricity.
Insulator
- Substance that doesn't allow heat and electricity to pass through them .
- Example- Rubber etc.
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