MCQ
Two parallel conductors carrying unequal currents in the same direction _______
  • A
    neither attract nor repel each other
  • B
    repel each other
  • attract each other
  • D
    will have rotational motion.

Answer

Correct option: C.
attract each other
(c) Two parallel conductors carrying unequal currents in the same direction will attract each other whereas two parallel conductors carrying currents in opposite direction will repel each other.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

In a cyclotron, charged particles are accelerated by
When a certain metal surface is illuminated with light of frequency $v$, the stopping potential for photoelectric current is $V_0$. When the same surface is illuminated by light of frequency $\frac{v}{2}$, the stopping potential is $\frac{V_0}{4}$, the threshold frequency for photoelectric emission is
The ionization energy of Hydrogen atom in its ground state is ______ 
A solid metallic sphere has a charge $+3 Q$. Concentric with this sphere is a conducting spherical shell having charge $-Q$. The radius of the sphere is ' $A$ ' and that of the spherical shell is ' $B$ ' $(B>A)$. The electric field at a distance 'R' (A < R < B) from the center is $\left(\varepsilon_0=\right.$ permittivity of vacuum $)$
A fly wheel at rest is to reach an angular velocity of $24 rad / s$ in 8 second with constant angular acceleration. The total angle turned through during this interval is
The magnetic dipole moment has the dimensions of current
The path difference between two waves meeting at a point is (11/4)λ. The phase difference between the two waves is ______
The efficiency of a heat engine is ' $\eta$ ' and the coefficient of performance of a refrigerator is ' $\beta$ '. Then
If the polarizing angle of a piece of glass for green light is $54.74^{\circ}$, then the angle of minimum deviation for an equilateral prism made of same glass is (Given : $\tan 54.74^{\circ}=1.414$ )
Two spheres $P$ and $Q$ having radii $8 \mathrm{~cm}$ and $2 \mathrm{~cm}$, and of the same surface characteristics are maintained at $127^{\circ} \mathrm{C}$ and $527^{\circ} \mathrm{C}$, respectively. The ratio of the radiant powers of $P$ to $Q$ is