18 Questions
What does Coulomb's law apply to?
Pairs of point charges
What is the principle of superposition in Coulomb's law?
The net force on any charge is the sum of forces from other charges
What is the value of Coulomb's constant, k?
$8.99 \times 10^9$ N/m$^2$/C$^2$
What is the net force on particle 2 due to the other 2 charges in the given scenario?
$-9$ N
If three charged particles are arranged in a line, what will be the resultant force experienced by particle 3 due to particles 1 and 2?
$-9$ N
What will be the force on particle q3 (-86 µC) due to q1 (65 µC) and q2 (50 µC) at their respective coordinates?
$8.55 \times 10^{-5}$ N
If the distance between two charged objects is doubled, how does the electrostatic force between them change?
The force is reduced by a factor of 4
What is the unit of the Coulomb constant (k) in Coulomb's law?
N-m$^2$/C$^2$
According to Newton's third law, what can be said about the electric forces between two charged objects?
The forces are equal and opposite
If the charge of one object is doubled, while the charge of the other object remains the same, how does the electrostatic force between them change?
The force doubles
If both the charges of two objects are doubled, how does the electrostatic force between them change?
The force quadruples
What is the direction of the electrostatic force between two charged objects?
The force is directed along the line connecting their centers
If the distance between two charges is doubled, how does the electrostatic force between them change?
The force is quartered
If two charges have the same sign, the force between them is:
Repulsive
What is the unit of the Coulomb constant (k) in the expression for electrostatic force?
N*m^2/C^2
If the charges on two objects are doubled, how does the electrostatic force between them change?
The force is quadrupled
If two charges exert a force on each other, which of the following statements is true according to Newton's third law?
The force exerted by charge A on charge B is equal and opposite to the force exerted by charge B on charge A
What happens to the electrostatic force between two charges if the medium between them changes from air to water?
The force remains the same
Test your knowledge on calculating electric force between two charged objects and comparing it with the weight of an average person. Given static electric charges, distance, and constants, determine the force exerted using the inverse square law formula. Compare this force with the gravitational force on a 70 kg person.
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