AIEEE 2004 | Electrostatics Question 273 | Physics

AIEEE 2004

MCQ (Single Correct Answer)

-1

Two spherical conductors $$B$$ and $$C$$ having equal radii and carrying equal charges on them repel each other with a force $$F$$ when kept apart at some distance. A third spherical conductor having same radius as that $$B$$ but uncharged is brought in contact with $$B,$$ then brought in correct with $$C$$ and finally removed away from both. The new force of repulsion between $$B$$ and $$C$$ is

$$F/8$$

$$3$$ $$F/4$$

$$F/4$$

$$3$$ $$F/8$$

AIEEE 2004

MCQ (Single Correct Answer)

-1

A charged oil drop is suspended in a uniform field of $$3 \times {10^4}$$ $$v/m$$ so that it neither falls nor rises. The charge on the drop will be (Take the mass of the charge $$ = 9.9 \times {10^{ - 15}}\,\,kg$$ and $$g = 10\,m/{s^2}$$)

$$1.6 \times {10^{ - 18}}\,C$$

$$3.2 \times {10^{ - 18}}\,C$$

$$3.3 \times {10^{ - 18}}\,C$$

$$4.8 \times {10^{ - 18}}\,C$$

AIEEE 2003

MCQ (Single Correct Answer)

-1

A thin spherical conducting shell of radius $$R$$ has a charge $$q.$$ Another charge $$Q$$ is placed at the center of the shell. The electrostatic potential at a point $$P$$ a distance $${R \over 2}$$ from the center of the shell is

$${{2Q} \over {4\pi {\varepsilon _0}R}}$$

$${{2Q} \over {4\pi {\varepsilon _0}R}} - {{2q} \over {4\pi {\varepsilon _0}R}}$$

$${{2Q} \over {4\pi {\varepsilon _0}R}} + {q \over {4\pi {\varepsilon _0}R}}$$

$${{\left( {q + Q} \right)2} \over {4\pi {\varepsilon _0}R}}$$

AIEEE 2003

MCQ (Single Correct Answer)

-1

Three charges $$ - {q_1}, + {q_2}$$ and $$ - {q_3}$$ are placed as shown in the figure. The $$x$$-component of the force on $$ - {q_1}$$ is proportional to AIEEE 2003 Physics - Electrostatics Question 274 English

AIEEE 2003 Physics - Electrostatics Question 274 English

$${{{q_2}} \over {{b^2}}} - {{{q_3}} \over {{a^2}}}\cos \theta $$

$${{{q_2}} \over {{b^2}}} + {{{q_3}} \over {{a^2}}}\sin \theta $$

$${{{q_2}} \over {{b^2}}} + {{{q_3}} \over {{a^2}}}\cos \theta $$

$${{{q_2}} \over {{b^2}}} - {{{q_3}} \over {{a^2}}}sin\theta $$

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