NEET 2013 | Electrostatics Question 38 | Physics

NEET 2013

MCQ (Single Correct Answer)

-1

Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium separation between them is r. Now the strings are rigidly clamped at half the height. The equilibrium separation between the balls now become

NEET 2013 Physics - Electrostatics Question 60 English

NEET 2013 Physics - Electrostatics Question 60 English

$$\left( {{{2r} \over {\sqrt 3 }}} \right)$$

$$\left( {{{2r} \over 3}} \right)$$

$${\left( {{1 \over {\sqrt 2 }}} \right)^2}$$

$$\left( {{r \over {\root 3 \of 2 }}} \right)$$

AIPMT 2012 Mains

MCQ (Single Correct Answer)

-1

Two metallic spheres of radii 1 cm and 3 cm are given charges of $$-$$1 $$ \times $$ 10^$$-$$2 C and 5 $$ \times $$ 10^$$-$$2 C, respectively. If these are connected by a conducting wire, the final charge on the bigger sphere is

2 $$ \times $$ 10^$$-$$2 C

3 $$ \times $$ 10^$$-$$2 C

4 $$ \times $$ 10^$$-$$2 C

1 $$ \times $$ 10^$$-$$2 C

AIPMT 2012 Prelims

MCQ (Single Correct Answer)

-1

An electric dipole of moment p is placed in an electric field of intensity E. The dipole acquires a position such that the axis of the dipole makes an angle $$\theta $$ with the direction of the field. Assuming that the potential energy of the dipole to be zero when $$\theta $$ = 90^o, the torque and the potential energy of the dipole will respectively be

pEsin$$\theta $$, $$-$$pEcos$$\theta $$

pEsin$$\theta $$, $$-$$2pEcos$$\theta $$

pEsin$$\theta $$, 2pEcos$$\theta $$

pEcos$$\theta $$, $$-$$pEsin$$\theta $$

AIPMT 2012 Prelims

MCQ (Single Correct Answer)

-1

What is the flux through a cube of side $$a$$ if a point charge of q is at one of its corner?

$${{2q} \over {{\varepsilon _0}}}$$

$${q \over {8{\varepsilon _0}}}$$

$${q \over {{\varepsilon _0}}}$$

$${q \over {2{\varepsilon _0}}}6{a^2}$$

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