EASY
12th CBSE
IMPORTANT
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State Coulomb's law of force between charges at rest. Express the same in SI units.

Important Questions on Electric Charges and Field

EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 1 - Electric Charges and Field>Text Based Exercises>Q 19
In Coulomb’s law, F=kq1q2r2, what are the factors on which the proportionality constant k depends?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 1 - Electric Charges and Field>Text Based Exercises>Q 20
Name and define the SI unit of charge.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 1 - Electric Charges and Field>Text Based Exercises>Q 21
In the relation F,=kq1q2r2, what is the value of k in free space?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 1 - Electric Charges and Field>Text Based Exercises>Q 22
Give the SI unit of electrical permittivity at free space
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 1 - Electric Charges and Field>Text Based Exercises>Q 23
Write down the value of absolute permittivity of free space
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 1 - Electric Charges and Field>Text Based Exercises>Q 24
Deduce the dimensional formula for the proportionality constant k in Coulomb's law.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 1 - Electric Charges and Field>Text Based Exercises>Q 25
Write the dimensional formula for the permittivity constant ε0 of free space.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 1 - Electric Charges and Field>Text Based Exercises>Q 26
What is the force of repulsion between two charges of 1 C each, kept 1 m apart in vacuum?