The value of the Coulomb constant is _.
Correct answer: B. 9 x 10^9 Nm2 / C2
- A. 9 x 10^9 Nm2
- B. 9 x 10^9 Nm2 / C2
- C. 9 x 10^-9 Nm2 / C2
- D. 9 x 10^-9 Nm2
Explanation
The value of the Coulomb constant, also known as the electric constant is approximately 9 x 109 Nm2/C2. This constant appears in Coulomb's law. It is represented by k and it depends on the medium between the charges and the system of units in which F(Columb's Force), q(charge) and r(distance between point charges) are measured .
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Electrostatics describes forces between charges through Coulomb's law, electric fields and field intensity, then uses electric potential to measure energy per unit charge. Capacitors store charge and electrical energy, with capacitance depending on geometry and dielectric material, not simply on the amount of charge present.
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