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

Answer

Correct option: B.
The current increases
The current increases

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

A solid sphere of mass $2 kg$ is resting inside a cube as shown in the figure. The cube is moving with a velocity $v=(5 t \hat{i}+2 \hat{j}) m / s$. Here $t$ is the time in second. All surface are smooth. The sphere is at rest with respect to the cube. What is the total force exerted by the sphere on the cube. (Take $g=10 m / s$ )
Image
Fraunhofer lines are produced by
The refractive index of a particular material is $1.67$ for blue light, $1.65$ for yellow light and $1.63$ for red light. The dispersive power of the material is
In a vibration magnetometer, the time period of a bar magnet oscillating in horizontal component of earth's magnetic field is $2 \mathrm{sec}$. When a magnet is brought near and parallel to it, the time period reduces to $1 \mathrm{sec}$. The ratio $H / F$ of the horizontal component $H$ and the field $F$ due to magnet will be
A large horizontal surface moves up and down in SHM with an amplitude of $1 cm$. If a mass of $10 kg$ (which is placed on the surface) is to remain continually in contact with it, the maximum frequency of S.H.M. will be
The reason for shining of air bubble in water is
Which of the following plots may represent the thermal energy produced in a resistor in a given time as a function of the electric current

Image

The thermal conductivity of a material in CGS system is 0.4. In steady state, the rate of flow of heat $10 \mathrm{cal} / \mathrm{sec}-\mathrm{cm}$, then the thermal gradient will be
Orbital acceleration of electron is
A $5 \mathrm{~cm}$ thick ice block is there on the surface of water in a lake. The temperature of air is $-10^{\circ} \mathrm{C}$; how much time it will take to double the thickness of the block $\left(L=80 \mathrm{cal} / \mathrm{g}, K_{-}=0.004 \mathrm{Erg} / \mathrm{s}-k, d_\omega=0.92 \mathrm{~g} \mathrm{~cm}^{-3}\right)$