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Torque on a Dipole

A charge Q is...

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A charge Q is uniformly distributed over a rod of length 2l consider cube of edge l with the center of cube at one end of the rod the minimum possible electric flux through the s

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Q

is uniformly distributed over a rod of length

l

. Consider a hypothetical cube of edge

l

with the centre of the cube at one end of the rod. Find the minimum possible flux of the electric field through the entire surface of the cube.

Q

is uniformly distributed over a rod of length

l

. Consider a hypothetical cube of edge

l

such that one end of the rod is kept at the centre of the cube and also rod intersects one of the faces of the cube perpendicularly. Then the electric flux through the entire surface of the cube is :

Q

is uniformly distributed over a rod of length

l

held perpendicular to the face of a hypothetical cube of side length

l

with the centre of the cube at one end of the rod as shown in the figure below. Find the flux of the electric field through the entire surface of the cube.

Q

is uniformly distributed over a rod of length

L

. Consider a hypothetical sphere of radius

\frac{L}{2}

with the centre of the sphere at one end of the rod. Find the value of flux passing through the entire surface of the sphere.

Q. Fig. (a) shows an imaginary cube of edge

L / 2

. A uniformly charged rod of length L moves towards left at a small but constant speed

υ

t = 0

, the left end just touches the centre of the face of the cube opposite it. Which of the graphs shown in Fig. (b) represents the flux of the electric field through the cube as the rod goes through it?

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