Two copper balls, each weighing $10\,g$ are kept in air $10\, cm$ apart. If one electron from every ${10^6}$ atoms is transferred from one ball to the other, the coulomb force between them is (atomic weight of copper is $63.5$)
Two copper balls, each weighing $10\,g$ are kept in air $10\, cm$ apart. If one electron from every ${10^6}$ atoms is transferred from one ball to the other, the coulomb force between them is (atomic weight of copper is $63.5$)
- A
$2.0 \times {10^{10}}\,N$
- B
$2.0 \times {10^4}\,N$
- C
$2.0 \times {10^8}\,N$
- D
$2.0 \times {10^6}\,N$
Similar Questions
A thin metallic wire having cross sectional area of $10^{-4} \mathrm{~m}^2$ is used to make a ring of radius $30 \mathrm{~cm}$. A positive charge of $2 \pi \mathrm{C}$ is uniformly distributed over the ring, while another positive charge of $30$ $\mathrm{pC}$ is kept at the centre of the ring. The tension in the ring is__________ $\mathrm{N}$; provided that the ring does not get deformed (neglect the influence of gravity). (given, $\frac{1}{4 \pi \epsilon_0}=9 \times 10^9 \mathrm{SI}$ units)
A thin metallic wire having cross sectional area of $10^{-4} \mathrm{~m}^2$ is used to make a ring of radius $30 \mathrm{~cm}$. A positive charge of $2 \pi \mathrm{C}$ is uniformly distributed over the ring, while another positive charge of $30$ $\mathrm{pC}$ is kept at the centre of the ring. The tension in the ring is__________ $\mathrm{N}$; provided that the ring does not get deformed (neglect the influence of gravity). (given, $\frac{1}{4 \pi \epsilon_0}=9 \times 10^9 \mathrm{SI}$ units)
- [JEE MAIN 2024]
Consider two point charges of equal magnitude and opposite sign separated by a certain distance. The neutral point due to them
Consider two point charges of equal magnitude and opposite sign separated by a certain distance. The neutral point due to them
Identify the wrong statement in the following. Coulomb's law correctly describes the electric force that
Identify the wrong statement in the following. Coulomb's law correctly describes the electric force that
The unit of electric permittivity is
The unit of electric permittivity is
Two electrons are separated by a distance of $1\,\mathop A\limits^o $. What is the coulomb force between them
Two electrons are separated by a distance of $1\,\mathop A\limits^o $. What is the coulomb force between them