AIPMT 2012 Mains | Electrostatics Question 41 | Physics

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

Four point charges $$-$$Q, $$-$$q, 2q and 2Q are placed, one at each corner of the square. The relation between Q and q for which the potential at the centre of the square is zero is

Q = $$-$$q

Q = $$ - {1 \over q}$$

Q = q

Q = $${1 \over q}$$

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?

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

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

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

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

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$$\theta $$

Previous Next

NEET Subjects

Biology

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution