MCQ
When cells are connected in parallel, then
  • A
    The current decreases
  • The current increases
  • C
    The e.m.f. increases
  • D
    The e.m.f. decreases

Answer

Correct option: B.
The current increases
b
(b)In parallel, equivalent resistance is low $\left( {i = \frac{E}{{R + \frac{r}{n}}}} \right)$

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

At a particular instant the current in the circuit given below is $i$. The displacement current between the plates of the capacitor shown below is ..........
In the adjacent diagram,$ CP$ represents a wavefront and $AO$ & $BP$, the corresponding two rays. Find the condition on $\theta$ for constructive interference at $P$ between the ray $BP$ and reflected ray $OP$
The output of the given circuit diagram is
If $r$ represents the radius of the orbit of a satellite of mass $m$ moving around a planet of mass $ M$, the velocity of the satellite is given by
For free expansion of the gas which of the following is true
A rectangular coil of length $0 .12\, m$ and width $0.1\, m$ having $50$ turns of wire is suspended vertically in a uniform magnetic field of strength $0.2\,\, Weber/m^2.$ The coil carries a current of $2 \,\,A.$ If the plane of the coil is inclined at an angle of $30^o $ with the direction of the field, the torque required to keep the coil in stable equilibrium will be .......$Nm$
When a coil is connected across a $20 \mathrm{~V}$ dc supply, it draws a current of $5 \mathrm{~A}$. When it is connected across $20 \mathrm{~V}, 50 \mathrm{~Hz}$ ac supply, it draws a current of $4 \mathrm{~A}$. The self inductance of the coil is .............. $\mathrm{mH}$. (Take $\pi=3$ )
The inductance between $A$ and $D$ is
$S.I.$ unit of universal gas constant is
A force $\mathrm{F}=\alpha+\beta \mathrm{x}^{2}$ acts on an object in the x -direction. The work done by the force is 5 J when the object is displaced by 1 m . If the constant $\alpha=1 \mathrm{~N}$ then $\beta$ will be