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Explain the charging by conduction in terms of movement of electrons. - Physics

Answer in Brief

Explain the charging by conduction in terms of movement of electrons.

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Solution

CHARGING A CONDUCTOR BY CONDUCTION:

Place rod Aon an insulating stand and bring a +vely charged conductor B near A and touch it.
Charge from B is transferred on A till charge on both of them is same. Remove conductor B. A gets charged positively.
Explanation on the bases of electrons: Suppose body A (neutral rod) has 10 protons and 10 electrons. Body B is positively charged is deficient in electrons has 20 electrons and 30 protons. On touching B with A, 5 protons are transferred to A.
Now B is +vely charged as B has 25 P and 20 electrons.
A is also +vely charged as A has 15 protons and 10 electrons.
∴ A and B each has, 5 protons in excess and have +5 charge.

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APPEARS IN

Selina Concise Physics Class 8 ICSE
Chapter 8 Electricity
Exercise 8 (B) (Short/Long answer questions) | Q 28 | Page 167
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