IIT-JEE 2012 Paper 2 Offline | Electrostatics Question 35 | Physics

IIT-JEE 2012 Paper 2 Offline

MCQ (More than One Correct Answer)

-1

Six point charges are kept at the vertices of a regular hexagon of side $$L$$ and center $$O,$$ as shown in the figure. Given that $$K = {1 \over {4\pi {\varepsilon _0}}}{q \over {{L^2}}},$$ which of the following statement(s) is (are) correct ?
IIT-JEE 2012 Paper 2 Offline Physics - Electrostatics Question 46 English

IIT-JEE 2012 Paper 2 Offline Physics - Electrostatics Question 46 English

The electric field at $$O$$ is $$6K$$ along $$OD$$

The potential at $$O$$ is zero

The potential at all points on the line $$PR$$ is same

The potential at all points on the line $$ST$$ is same

IIT-JEE 2012 Paper 1 Offline

MCQ (More than One Correct Answer)

-1

A cubical region of side $$a$$ has its center at the origin. It encloses three fixed point charges, $$-q$$ at $$\left( {0, - a/4,0} \right), + 3q$$ at $$\left( {0,0,0} \right)$$ and $$-q$$ at $$\left( {0, + a/4,0} \right).$$ Choose the correct option(s)
IIT-JEE 2012 Paper 1 Offline Physics - Electrostatics Question 47 English

IIT-JEE 2012 Paper 1 Offline Physics - Electrostatics Question 47 English

The net electric flux crossing the plane $$x=+a/2$$ is equal to the net electric flux crossing the plane $$x=-a/2$$

The net electric flux crossing the plane $$y=+a/2$$ is more than the net electric flux crossing the plane $$y=-a/2.$$

The net electric flux crossing the entire region is $${q \over {{\varepsilon _0}}}$$

The net electric flux crossing the plane $$z = + a/2$$ is equal to the net electric flux crossing the plane $$x=+a/2.$$

IIT-JEE 2011 Paper 1 Offline

MCQ (More than One Correct Answer)

-1

A spherical metal shell A of radius $${R_A}$$ and a solid metal sphere $$B$$ of radius $${R_B}\left( { < {R_A}} \right)$$ are kept far apart and each is given charge $$' + Q'.$$ Now they are connected by a thin metal wire. Then

$$E_A^{inside} = 0$$

$${Q_A} > {Q_B}$$

$${{{\sigma _A}} \over {{\sigma _B}}} = {{{R_B}} \over {{R_A}}}$$

$$E_A^{on\,\,surface} < \,E_B^{on\,\,surface}$$

IIT-JEE 2011 Paper 2 Offline

MCQ (More than One Correct Answer)

-1

Which of the following statement(s) is/are correct?

If the electric field due to a point charge varies as $${r^{ - 2.5}}$$ instead of $${r^{ - 2}},$$ then the Gauss law will still be valid.

The Gauss law can be used to calculate the field distribution around an electric dipole.

If the electric field between two point charges is zero somewhere, then the sign of the two charges is the same.

The work done by the external force in moving a unit positive charge from point $$A$$ at potential $${V_A}$$ to point $$B$$ at potential $${V_B}$$ is $$\left( {{V_B} - {V_A}} \right).$$

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