Two identical spheres carrying charges - 9 μ C and 5 μ C respectively are kept in contact and then separated from each other. Point out true statement from the following. In each sphere

Question

Two identical spheres carrying charges - 9 μ C and 5 μ C respectively are kept in contact and then separated from each other. Point out true statement from the following. In each sphere (A) 1.25 × 1013 electrons are in deficit (B) 1.25 × 1013 electrons are in excess (C) 2.15 × 1013 electrons are in excess (D) 2.15 × 1013 electrons are in deficit

Tardigrade Admin · Accepted Answer

<img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/9be694c0317083c37fcd77f9f73043fb-.png" /> After initial contact and separation, each sphere will be having -2 μ C each ∴ : :: : n = ( -2 × 10-6 / -1.6 × 10-19) = 1.25 × 1013 i.e. : : 1.25 × 1013 electrons as in excess in each sphere.

Q. Two identical spheres carrying charges - $9 μ C$ and $5 μ C$ respectively are kept in contact and then separated from each other. Point out true statement from the following. In each sphere

$1.25 \times 1 0^{13}$ electrons are in deficit

$1.25 \times 1 0^{13}$ electrons are in excess

$2.15 \times 1 0^{13}$ electrons are in excess

$2.15 \times 1 0^{13}$ electrons are in deficit

After initial contact and separation, each sphere will be having - $2 μ C$ each
$∴ n = \frac{- 2 \times 1 0 ^{- 6}}{- 1.6 \times 1 0 ^{- 19}} = 1.25 \times 1 0^{13}$
$i . e . 1.25 \times 1 0^{13}$ electrons as in excess in each sphere.

Q. Two identical spheres carrying charges - 9μC and 5μC respectively are kept in contact and then separated from each other. Point out true statement from the following. In each sphere

1.25×1013 electrons are in deficit

1.25×1013 electrons are in excess

2.15×1013 electrons are in excess

2.15×1013 electrons are in deficit