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) 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

Wires $1$ and $2$ carrying currents ${i_1}$ and ${i_2}$respectively are inclined at an angle $\theta $ to each other. What is the force on a small element $dl$ of wire $2$ at a distance of $r$ from wire $1$ (as shown in figure) due to the magnetic field of wire $1$
A person A can clearly see objects between 25cm and 200cm. Which of the following may represent the range of clear vision for a person B having muscles stronger than A, but all other parameters of eye identical to that of A?
In the following circuits PN-junction diodes $D_1, D_2$ and $D_3$ are ideal for the following potential of A and B, the correct increasing order of resistance between A and B will be
(i) – 10 V, – 5V (ii) – 5V, – 10 V (iii) – 4V, – 12V
Current $i$ is passed as shown in diagram. If radius of the circle is a, then the magnetic flux density at the centre $P$ will be:
If the resistance of a conductor is $5\,\Omega\,\,$ at $\,50\,^oC$ and $7\, \Omega\,$ at $\,100\,^oC$ then the mean temperature coefficient of resistance of the material is ............... $^oC$
Give the SI unit of magnetic dipole moment.
What is the effective capacitance between points X and Y
A narrow beam of white light goes through a slab having parallel faces.
In a series $LCR$ circuit, the frequency of source is half of the resonance frequency. The nature of the circuit will be:-
A resistor and an pure inductor are connected to an ac supply of $120\,V$ and $50\,Hz$. The current in the circuit is $3\,A$. If the power consumed in the circuit is $108\,W$, then the resistance in the circuit is.....$\Omega $