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Physics 10 Chapter 13 - Electrostatics - 10
1.
Write down the statement of Coulomb’s law?
a) F = k (q
_{1}
x q
_{2}
) / r
^{2}
b) F = k (q
_{1}
/ q
_{2}
) x r
^{2}
c) F = k (q
_{1}
x q
_{2}
) x r
^{2}
d) F = k (q
_{1}
/ q
_{2}
) / r
^{2}
2.
According to Coulomb’s law, what happens to the attraction of two oppositely charged objects as their distance of separation increases?
a) Increases
b) Cannot be determined
c) Decreases
d) Remains unchanged
3.
What is ‘F’ in the formula of Coulomb’s law?
a) F is proportionality constant
b) F is the force between the two charges
c) F is Faraday’s constant
d) F is permittivity of space
4.
What is ‘q
_{1}
’ in the formula of Coulomb’s law?
a) Coulomb’s force
b) Force
c) Quantity of charge on a body
d) Proportionality constant
5.
What is ‘q
_{2}
’ in the formula of Coulomb’s law?
a) Coulomb’s force
b) Quantity of charge on a body
c) Proportionality constant
d) Force
6.
What is ‘r’ in the formula of Coulomb’s law?
a) Distance between the two charges
b) Radius of the charge
c) Proportionality constant
d) Radius of the body
7.
What is ‘r’ in the formula of Coulomb’s law?
a) Distance between the two charges
b) Proportionality constant
c) Radius of the body
d) Kinetic energy
8.
What is the value of ‘K’?
a) K = 4πε
_{o}
/ 2
b) K = 1 / 4πε
_{o}
c) K = 1 + 4πε
_{o}
d) K = 4πε
_{o}
9.
Upon which of the following, the value of ‘K’ depends?
a) The medium between the two charges
b) System of units in which F, q and r are measured
c) All of these
d) The permittivity of space
10.
When was the fundamental law of electric force between two stationary charged particles established?
a) 1758
b) 1785
c) 1875
d) 1857
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