AIPMT 2011 Prelims | Electrostatics Question 41 | Physics

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

Four electric charges +q, +q, $$-$$ q and $$-$$ q are placed at the corners of a square of side 2L (see figure). The electric potential at point A, midway between the two charges + q and +q, is

AIPMT 2011 Prelims Physics - Electrostatics Question 48 English

AIPMT 2011 Prelims Physics - Electrostatics Question 48 English

$${1 \over {4\pi {\varepsilon _0}}}{{2q} \over L}\left( {1 + \sqrt 5 } \right)$$

$${1 \over {4\pi {\varepsilon _0}}}{{2q} \over L}\left( {1 + {1 \over {\sqrt 5 }}} \right)$$

$${1 \over {4\pi {\varepsilon _0}}}{{2q} \over L}\left( {1 - {1 \over {\sqrt 5 }}} \right)$$

zero

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

A charge Q is enclosed by a Gaussian spherical surface of radius R. If the radius is doubled, then the outward electric flux will

increase four times

be reduced to half

remain the same

be doubled

AIPMT 2010 Mains

MCQ (Single Correct Answer)

-1

The electric field at a distance $${{3R} \over 2}$$ from the centre of a charged conducting spherical shell of radius R is E. The electric field at a distance $${R \over 2}$$ from the centre of the sphere is

zero

$${E \over 2}$$

$${E \over 3}$$

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

Two positives ions, each carrying a charge q, are separated by a distance d. If F is the force of repulsion between the ions, the number of electrons missing from each ion will be (e being the charge on an electron)

$${{4\pi {\varepsilon _0}F{d^2}} \over {{e^2}}}$$

$$\sqrt {{{4\pi {\varepsilon _0}F{e^2}} \over {{d^2}}}} $$

$$\sqrt {{{4\pi {\varepsilon _0}F{d^2}} \over {{e^2}}}} $$

$${{4\pi {\varepsilon _0}F{d^2}} \over {{q^2}}}$$

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