Question
When is a Wheatstone’s bridge most sensitive?
✓
Answer
The Wheatstone’s bridge is most sensitive when all the four resistances of the bridge are equal.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
If the self-inductance of an iron core inductor increases from 0·01mH to 10mH on introducing the iron core into it, what is the relative permeability of the core material used?
The flux inside a balloon of radius 7.0 cm is 2.0 - $10^3 NmC ^{-1}$. If the radius of the balloon is doubled, what will be the value of flux?
→‘Device X’ shown here, converts the input voltage waveform into the output voltage waveform as shown in fig. Name the device X.
Define the term relaxation time' in a conductor.
If ni is density of intrinsic charge carriers; nh and ne are densities of hole and electrons in extrinsic semiconductor, what is the relation among them?
Why is it found experimentally difficult to detect neutrinos in nuclear $\beta$-decay?
→A vertical metal cylinder of radius 2cm and length 2m is fixed at the lower end and a load of 100kg is put on it. Find
- The stress.
- The strain and.
- The compression of the cylinder. Young's modulus of the metal = 2 × 1011 N/m2.
You are given following three lenses. Which two lenses will you use as an eyepiece and as an objective to construct an astronomical telescope?
| Lenses | Power (P) | Aperture (A) |
| L1 | 3 D | 8 cm |
| L2 | 6 D | 1 cm |
| L3 | 10 D | 1 cm |
If a point charge is rotated in an arc of radius r around a charge q, what will be the work done? Explain.
A circular loop of radius 4.0cm is placed in a horizontal plane and carries an electric current of 5.0A in the clockwise direction as seen from above. Find the magnetic field:
- At a point 3.0cm above the centre of the loop.
- At a point 3.0cm below the centre of the loop.