MCQ
Electromotive force is the force, which is able to maintain a constant
  • A
    Current
  • B
    Resistance
  • C
    Power
  • Potential difference

Answer

Correct option: D.
Potential difference
d
Electromotive force is the force, which is able to maintain a constant potential difference.

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

According to Mosley's law, the frequency of a spectral line in X-ray spectrum varies as
The de$-$Broglie wavelength of a tennis ball of mass $66 g$ moving with the velocity of $10$ metre per second approximately:
In a situation the contact force by a rough horizontal surface on a body placed on it has constant magnitude. If the angle between this force and the vertical is decreased, the frictional force between the surface and the body will:
Two thin similar convex glass pieces are joined together front to front with its rear portion silvered such that a sharp image is formed $20 \,cm$ from the mirror. When the air between the glass pieces is replaced by water $\left(\mu_w=4 / 3\right)$, then the image formed from the mirror is at a distance of ........ $cm$
Cutoff wavelength of $X-$rays coming from a Coolidge tube depends on the:
If $M_o$ is the mass of an oxygen isotope $_8O^{17} ,M_p$ and $M_N$ are the masses of a proton and a neutron respectively, the nuclear binding energy of the isotope is
The eye can be regarded as a single refracting surface. The radius of curvature of this surface is equal to that of cornea $(7.8\, mm)$. This surface separates two media of refractive indices $1$ and $1.34$. Calculate the distance from the refracting surface at which a parallel beam of light will come to focus.......$cm$
The work function of sodium is $2.3 eV$. The threshold wavelength of sodium will be ........... $\mathop A\limits^o $
The relation between the linear magnification $m,$ the object distance $u$ and the focal length $f$ is
A bar magnet is placed north-south with its north pole due north. The points of zero magnetic field will be in which direction from the centre of the magnet