Question

name the current carriers in solid,liquid and gases

Answer 1

In gases the atoms are much more spread out than in solid or liquid and then atoms collide randomly with one another. the gas will fill any container but if the container is not sealed the gas will escape. gas can be compressed much more easily than a liquid or solid

Answer 2

Answer:

Current carriers in solid conductors,liquid and …

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Current carriers in solid conductors,liquid and gas

Posted by Shabnam Khan 3 years, 9 months ago

CBSE > Class 12 > Physics

1 answers

Amar Kumar 3 years, 9 months ago

(I) Current Carrier in Solid Conductors : In solid conductors (e.g. metals), there are a large number of free electrons. when electric field (i.e. pd) is applied to the conductor, the free electrons start drifting in a particular direction to constitute that current .

(II) Current Carrier in Liquids : Some liquids are conductors of electricity. A Conducting liquid is called an electrolyte (e.g. solution of CuSO4). The electrolytic solution provides positive ions (e.g. Cu++) and negative ions (e.g. SO4--).When external electric field (i.e. p.d.) is applied, the positive ions move in one direction and negative ions in the opposite direction to constitute electric current. Hence in conducting liquids, ions (positive and negative) are the current carriers.

(III) Current Carrier in Gases : Under ordinary conditions, gases are insulators. However, when a gas under low pressure is subjected to high electric field (i.e. high p.d.), Ionisation of in gases molecules take place, i.e. electrons and positive ions are formed. Hence, current carriers in gases are free electrons and positive ions.