Electrostatic| Practice MCQs Physics for Mdcat | mosaicbro.com
Electrostatic| Practice MCQs Physics for Mdcat
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Review Answers:
8
The force of attraction or repulsion between any two charges is directly proportional to the magnitudes of the charges and ______ proportional to the square of the distance between them:
Correct Answer:A
Explanation:
Coulomb's law states that the force is inversely proportional to the square of the distance.
9
According to Coulomb’s law, if “q1” and “q2” are any two charges and “r” is distance between them, then ______:
Correct Answer:B
Explanation:
Coulomb's law is given by $F = K \frac{q_1 q_2}{r^2}$.
10
The value of “K” is constant and it depends upon the ______ between the charges:
Correct Answer:A
Explanation:
The value of $K$ depends on the medium between the charges.
11
The value of “K” = ______:
Correct Answer:A
Explanation:
$K = \frac{1}{4 \pi \epsilon_0}$ in free space.
12
The value of “$\epsilon_0$” in Coulomb’s law is ______:
Correct Answer:B
Explanation:
The permittivity of free space is $8.85 \times 10^{-12} \, \text{C}^2 / \text{Nm}^2$.
13
The force between two charges decreases by placing an ______ between two charges:
Correct Answer:A
Explanation:
An insulator (dielectric) reduces the force between charges.
14
The SI unit of charge is ______:
Correct Answer:B
Explanation:
The SI unit of charge is the coulomb (C).