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#### Question

"The outward electric flux due to charge +*Q* is independent of the shape and size of the surface which encloses is." Give two reasons to justify this statement.

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Find out the outward flux to a point charge +q placed at the centre of a cube of side ‘a’. Why is it found to be independent of the size and shape of the surface enclosing it? Explain.

What is the electric flux through a cube of side 1 cm which encloses an electric dipole?

A point charge +10 μC is a distance 5 cm directly above the centre of a square of side 10 cm, as shown in Fig. 1.34. What is the magnitude of the electric flux through the square? (*Hint: *Think of the square as one face of a cube with edge 10 cm.)

What is the net flux of the uniform electric field of Exercise 1.15 through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?

A uniformly charged conducting sphere of 2.4 m diameter has a surface charge density of 80.0 μC/m^{2}. (a) Find the charge on the sphere. (b) What is the total electric flux leaving the surface of the sphere?