Which instrument is used as the null detector in the Wheatstone b… - Vidyadip

Question

Which instrument is used as the null detector in the Wheatstone bridge?

✓

Answer

Galvanometer

Explanation:
A galvanometer is used as the null detector in a Wheatstone bridge. The null point means the situation in which no current flows through the circuit. The galvanometer is used for measuring the current and also to determine the voltage between any two points of the circuit. Galvanometer is used due to its sensitivity and therefore, even small currents can be measured.

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

Explore more

More "M.C.Q (1 Marks)" from Current Electricity→Current Electricity — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Rydberg’s constant is:

Angle between equipotential surface and lines of force is (a) Zero(b) 180° (c) 90°(d) 45°

A uniform wire of resistance $R$ is uniformly compressed along its length, until its radius becomes $n$ times the original radius. Now resistance of the wire becomes

If a lens is cut into two pieces perpendicular to the principal axis and only one part is used, the intensity of the image

A uniform wire of resistance $9\Omega$ is cut into $3$ equal parts. They are connected in the form of equilateral triangle $ABC.$ A cell of e.m.f. $2\ V$ and negligible internal resistance is connected across $B$ and $C.$ Potential difference across $AB$ is

The electron in a hydrogen atom makes a transition from an excited state to the ground state. Which of the following statements is true(a) Its kinetic energy increases and its potential and total energies decrease(b) Its kinetic energy decreases, potential energy increases and its total energy remains the same(c) Its kinetic and total energies decrease and its potential energy increases(d) Its kinetic, potential and total energies decreases

Ohm's law is true(a) For metallic conductors at low temperature(b) For metallic conductors at high temperature(c) For electrolytes when current passes through them(d) For diode when current flows

The capacitance of a capacitor does not depend on:

The shape of the plates.
The size of the plates.
The charges on the plates.
The separation between the plates.

A normally incident ray reflected at an angle of 90°. The value of critical angle is(a) 45°(b) 90°(c) 65°(d) 43.2°

Coating of strontium oxide on Tungsten cathode in a valve is good for thermionic emission because(a) Work function decreases(b) Work function increases(c) Conductivity of cathode increases(d) Cathode can be heated to high temperature