MCQ
Assertion: To convert a galvanometer into an ammeter a small resistance is connected in parallel with it.

Reason: The small resistance increases the combined resistance of the combination.

  • A
    If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
  • B
    If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
  • C
    If Assertion is correct but Reason is incorrect.
  • D
    If both the Assertion and Reason are incorrect.

Answer

An ammeter should have a low resistance which we get when we connect low resistance in parallel with galvanometer.

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 container of volume $1 \mathrm{~m}^3$ is divided into two equal compartments by a partition. One of these compartments contains an ideal gas at $300 K$. The other compartment is vacuum. The whole system is thermally isolated from its surroundings. The partition is removed and the gas expands to occupy the whole volume of the container. lts temperature now would be
$X$-ray beam can be deflected by
Unit of impulse is
Which of the following quantities is dimensionless
An alternating e.m.f. of frequency $v\left(=\frac{1}{2 \pi \sqrt{L C}}\right)$ is applied to a series $\text{LCR}$ circuit. For this frequency of the applied e.m.f.
Given mass of the moon is $1 / 81$ of the mass of the earth and corresponding radius is $1 / 4$ of the earth. If escape velocity on the earth surface is $11.2 \mathrm{~km} / \mathrm{s}$, the value of same on the surface of the moon is
Work done by a system under isothermal change from a volume $V_1$ to $V_2$ for a gas which obeys Vander Waal's equation $(V-\beta n)\left(P+\frac{\alpha n^2}{V}\right)=n R T$
An electron of mass $m$ when accelerated through a potential difference $V$ has de-Broglie wavelength $\lambda$. The de-Broglie wavelength associated with a proton of mass $M$ accelerated throug the same potential difference will be
An ideal coil of $10$ henry is joined in series with a resistance of $5$ ohm and a battery of $5$ volt. $2$ second after joining, the current flowing in ampere in the circuit will be
A particle of charge $q$ and mass $m$ moves in a circular orbit of radius $r$ with angular speed $\omega $. The ratio of the magnitude of its magnetic moment to that of its angular momentum depends on