COMEDK 2026 Afternoon Shift | Electrostatics Question 5 | Physics

In a uniform electric field $10^6 N C^{-1}$ an electric dipole of length 4 cm is placed with its axis making an angle $60^{\circ}$ with the electric field. If the dipole experiences a torque of $8 \sqrt{3} \mathrm{~N} \mathrm{~m}$.

Find the potential energy of the dipole.

$-8 J$

$ 8 J$

$-16 J$

$16 J$

COMEDK 2026 Afternoon Shift

MCQ (Single Correct Answer)

-0

A pith ball of mass ' $m$ ' gram and charge ' $Q$ ' is suspended using a mass less silk thread near a large charged conducting metal sheet of area ' $A$ ' and surface charged density ' $\sigma$ '. If the silk thread makes an angle $\Theta$ with the metal sheet, then:

$\tan \theta \propto \sigma$

$\tan \theta \propto A$

$\tan \theta \propto m g$

$\tan \theta \propto \frac{1}{\sigma}$

COMEDK 2026 Morning Shift

MCQ (Single Correct Answer)

-0

COMEDK 2026 Morning Shift Physics - Electrostatics Question 8 English

Two charges 1 C and 2 C are placed at coordinates $(0,3)$ and $(4,3)$ respectively in an XY plane. What is the work done to put a 30 C charge at the origin of the coordinate system?

$1.98 \times 10^9 \mathrm{~J}$

$198 \times 10^9 J$

$19.8 \times 10^9 J$

$3.98 \times 10^9 \mathrm{~J}$

COMEDK 2026 Morning Shift

MCQ (Single Correct Answer)

-0

Two-point charges of equal magnitude 0.01 C and opposite in sign are separated by 0.2 mm , forming an electric dipole. The electric dipole moment of the dipole is:

$2 \times 10^{-3} \mathrm{Cm}$ along the line joining the two charges and the direction of the dipole moment vector is from negative to positive 0.01 C

$4 \times 10^{-6} \mathrm{Cm}$ along the line joining the two charges and the direction of the dipole moment vector is from positive to negative 0.01 C

$2 \times 10^{-6} \mathrm{Cm}$ along the line joining the two charges and the direction of the dipole moment vector is from negative to positive 0.01 C

$2 \times 10^6 \mathrm{Cm}$ along the line joining the two charges and the direction of the dipole moment vector is from positive to negative 0.01 C

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