Question

A polythene piece rubbed with a wool has negative charge of 3 × 10^-7c. Estimate the number of electrons transferred

Answer 1

HEYA GM ❤

★ Q ( CHARGE ) = 3 × 10^-7

We know that ;

Q (CHARGE) = n × e

» n ( no. of electrons ) = Q / e

= Q / e = 3 × 10^-7 / 1.6 × 10^-19

≈ 2 × 10^12 electrons

A. Total electrons transferred are 2 × 10^12.

TQ ❤ ❤

Answer 2

Answer:

Explanation:

Given :-

Amount of charge on the polythene piece, Q = 3 × 10⁻⁷C  

Amount of charge on an electron, e = 1.6 × 10⁻¹⁹ C

To Calculate :-  

Number of electrons transferred from wool to polythene

Formula to be used :-

n = Q/e

Solution :-

⇒ n = Q/e

= 3 × 10⁻⁷/1.6 × 10⁻¹⁹  

= 3/1.6 × 1.875 × 10¹²  

Hence, 1.875 × 10¹² electrons have transferred from wool to polythene .