GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If one of the charges doubles, what happens to the force?
A
it doubles
B
it gets cut in half
C
it quadruples
D
it is cut by 1/4
Explanation: 

Detailed explanation-1: -Explanation: Electrostatic force is directly related to the charge of each object. So if the charge of one object is doubled, then the force will become two times greater.

Detailed explanation-2: -Physics 100. Q18 If two charges are both doubled in magnitude, without changing the distance between them, will the force one charge exerts on the other also be doubled? No the force will be quadrupled. You must realize that in this case BOTH charges are doubled.

Detailed explanation-3: -So as the dielectric constant increases, then the force between two charges decreases accordingly. Note: The relative permittivity or the dielectric constant of a medium is defined as the ratio of the permittivity of that medium to the permittivity in vacuum.

Detailed explanation-4: -Hence, the force between two charged objects is called the electrostatic force.

Detailed explanation-5: -If the separation distance between two objects is doubled (increased by a factor of 2), then the force of gravitational attraction is decreased by a factor of 4 (2 raised to the second power).

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