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15. In electrostatics, electric charge is a feature of particles like protons and electrons that decides the force of interaction among them.

a) Write the name of the law that is used to measure the above force of interaction.

b) Express the above law in vector form.

c) Two charged spheres, when placed in air, attract with a force [tex]\( F \)[/tex]. Keeping the distance between the charges constant, the spheres are immersed in a liquid of relative permittivity [tex]\( K \)[/tex]. Then the spheres will:
(i) attract with a force [tex]\( \frac{F}{K} \)[/tex]



Answer :

GinnyAnswer

Final answer:

Coulomb's Law explains the force of interaction between charged particles, expressed in vector form. When charged spheres are immersed in a liquid, the force of attraction changes based on the permittivity of the medium.


Explanation:

Coulomb's Law is used to measure the force of interaction between charged particles in electrostatics.

Coulomb's Law in vector form is expressed as F = k(q1q2)/(r^2) r-hat, where F is the force vector, k is Coulomb's constant, q1 and q2 are the magnitudes of the charges, r is the distance between the charges, and r-hat is the unit vector in the direction from q1 to q2.

When two charged spheres immersed in a liquid of relative permittivity K attract with a force F, the spheres will attract with a force KF when the distance between the charges is kept constant.


Learn more about Coulomb's Law and electrostatic force here:

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