A polythene piece rubbed with wool is found to have a negative charge of 6 × 10-7 C. The number of electrons transferred to polythene from wool is

Question

A polythene piece rubbed with wool is found to have a negative charge of 6 × 10-7 C. The number of electrons transferred to polythene from wool is (A) 3.75 × 1010 (B) 9.6 × 1010 (C) 9.6 × 1012 (D) 3.75 ×1012

Tardigrade Admin · Accepted Answer

Here, q = - 6 × 10-7 C ∴ Number of electrons transferred from wool to polythene, n=(q/e)=(-6×10-7/-1.6×10-19)=3.75×1012

Q. A polythene piece rubbed with wool is found to have a negative charge of $6 \times 1 0^{- 7} C$ . The number of electrons transferred to polythene from wool is

$3.75 \times 1 0^{10}$

$9.6 \times 1 0^{10}$

$9.6 \times 1 0^{12}$

$3.75 \times 1 0^{12}$

Here, $q = - 6 \times 1 0^{- 7} C$
$∴$ Number of electrons transferred from wool to polythene, $n = \frac{q}{e} = \frac{- 6 \times 1 0 ^{- 7}}{- 1.6 \times 1 0 ^{- 19}} = 3.75 \times 1 0^{12}$

Q. A polythene piece rubbed with wool is found to have a negative charge of 6×10−7C. The number of electrons transferred to polythene from wool is

3.75×1010

9.6×1010

9.6×1012

3.75×1012