MCQ
The unit of $e.m.f.$ is
  • A
    Joule
  • B
    Joule-Coulomb
  • C
    Volt-Coulomb
  • Joule/Coulomb

Answer

Correct option: D.
Joule/Coulomb
d
(d) Unit of $e.m.f.$ = volt = joule/coulomb

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

If earth suddenly stops rotating about its own axis, the increase in it’s temperature will be
A box containing $N$ molecules of a perfect gas at temperature ${T_1}$ and pressure ${P_1}$. The number of molecules in the box is doubled keeping the total kinetic energy of the gas same as before. If the new pressure is ${P_2}$ and temperature ${T_2}$, then
Newton's second law gives the measure of
A rope is wound around a hollow cylinder of mass $3\, kg$ and radius $40\, cm.$ ........ $rad/sec^2$ is the angular acceleration of the cylinder if the rope is pulled with a force of $30\, N\,?$
The pressure applied from all directions on a cube is $P$. How much its temperature should be raised to maintain the original volume $?$ The volume elasticity of the cube is $\beta $ and the coefficient of volume expansion is $\alpha $
The physical quantity $'$Energy Density$'$ has same dimensional formula as
$m x^{2}-b x+k=0$

Find time after which to the energy will become half of initial maximum value in damped force oscillation.

Which condition is true for an ideal Carnot engine which have 100% efficiency?
The temperature of equal masses of three different liquids $A, B$ and $C$ are $12°C, 19°C$ and $28°C$ respectively. The temperature when $A$ and $B$ are mixed is $16°C$ and when $B$ and $C$ are mixed is $23°C$. The temperature when $A$ and $C$ are mixed is........ $^oC$
A block of mass $2 M$ is attached to a massless spring with spring-constant $k$. This block is connected to two other blocks of masses $M$ and $2 M$ using two massless pulleys and strings. The accelerations of the blocks are $a_1, a_2$ and $a_3$ as shown in figure. The system is released from rest with the spring in its unstretched state. The maximum extension of the spring is $x _0$. Which of the following option($s$) is/are correct? [g is the acceleration due to gravity. Neglect friction]