COMEDK 2020 | Electrostatics Question 54 | Physics

An electric dipole is placed in a uniform electric field with the dipole axis making an angle $$\theta$$ with the direction of the electric field. The orientation of the dipole for stable equilibrium is

$$\frac{\pi}{6}$$

$$\frac{\pi}{3}$$

$$\frac{\pi}{2}$$

COMEDK 2020

MCQ (Single Correct Answer)

-0

Two point charges A = +3 nC and B = +1 nC are placed 5 cm apart in air. The work done to move charge B towards A by 1 cm is

$$2.0\times10^{-7}$$ J

$$1.35\times10^{-7}$$ J

$$2.7\times10^{-7}$$ J

$$12.1\times10^{-7}$$ J

COMEDK 2020

MCQ (Single Correct Answer)

-0

The potential energies associated with four orientations of an electric dipole in an electric field are

(i) $$-5U_0$$ (ii) $$-7U_0$$ (iii) $$3U_0$$ (iv) $$5U_0$$

where $$U_0$$ is positive. Rank the orientations according to the angle between the electric dipole moment p and electric field E, greatest first

(i), (ii), (iii), (iv)

(ii), (iii), (i), (iv)

(iv), (iii), (i), (ii)

(iv), (i), (iii), (ii)

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