MEDIUM
NEET
IMPORTANT
Earn 100

(a) Explain the invariant property of charge.
(b) Draw the electric field lines for a dipole.

Important Questions on Electric Charges and Fields

HARD
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 56
Derive an expression for electric field inside a solid non-conducting sphere of charge Q, when the charge is distributed uniformly. Also calculate electric field at the centre of sphere and electric field on the surface of sphere.
MEDIUM
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 57
Derive the expression for electric field on the axis of an electric dipole.
MEDIUM
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 58
What is meant by the statement that the electric field of a point charge has spherical symmetry whereas that of a linear charge of large length is cylindrically symmetrical?
HARD
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 59
(a) A copper sphere of mass 2 g contains nearly 2×1022 atoms. The charge on the nucleus of each atom is 29 e. What fraction of the electrons must be removed from the sphere to give it a charge of +2.9μC ?
(b) What is an electric line of force? What is its importance?
HARD
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 60
(a) Two infinite parallel planes have uniform charge densities +σ and -σ. What is the electric field between the planes?
(b) How can you charge an 'uncharged insulated conductor' negatively by electrostatic induction?
EASY
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IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 1
What is the minimum force between two charges 1 m apart?
EASY
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 2

Dielectric constant of vacuum is-

EASY
NEET
IMPORTANT
Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 3
In a uniform electric field E if we consider an imaginary cubical closed surface of side a, then the net flux through the cube is