By using Coulomb’s law, define unit charge.
By using Coulomb’s law, define unit charge.
In $SI$, the unit of charge is Coulomb.
Putting value of $q_{1}=q_{2}=1 \mathrm{C}, r=1 \mathrm{~m}$ in $\mathrm{F}=k \frac{q_{1} q_{2}}{r^{2}}$, then $\mathrm{F}=\frac{1}{4 \pi \epsilon_{0}}=9 \times 10^{9} \mathrm{~N}$
Definition of $1 \mathrm{C}: 1 \mathrm{C}$ is the charge that when placed at a distance of $1 \mathrm{~m}$ from another charge of the same magnitude in vacuum experiences an electrical force of repulsion of magnitude $9 \times 10^{9} \mathrm{~N}$.
Similar Questions
The force between two charges $0.06\,m$ apart is $5\,N$. If each charge is moved towards the other by $0.01\,m$, then the force between them will become.........$N$
The force between two charges $0.06\,m$ apart is $5\,N$. If each charge is moved towards the other by $0.01\,m$, then the force between them will become.........$N$
Two charges each of magnitude $Q$ are fixed at $2a$ distance apart. A third charge ($-q$ of mass $'m'$) is placed at the mid point of the two charges; now $-q$ charge is slightly displaced perpendicular to the line joining the charges then find its time period
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Write some important points for vector form of Coulomb’s law.
Write some important points for vector form of Coulomb’s law.
Two identical conducting spheres having unequal positive charges $q_1$ and $q_2$ separated by distance $r$. If they are made to touch each other and then separated again to the same distance, the electrostatic force between them in this case will be :-
Two identical conducting spheres having unequal positive charges $q_1$ and $q_2$ separated by distance $r$. If they are made to touch each other and then separated again to the same distance, the electrostatic force between them in this case will be :-
Two point charges $3 \times 10^{-6} \,C$ and $8 \times 10^{-6} \, C$ repel each other by a force of $6 \times 10^{-3} \, N$. If each of them is given an additional charge $-6 \times 10^{-6} \, C$, the force between them will be
Two point charges $3 \times 10^{-6} \,C$ and $8 \times 10^{-6} \, C$ repel each other by a force of $6 \times 10^{-3} \, N$. If each of them is given an additional charge $-6 \times 10^{-6} \, C$, the force between them will be