Question

The Wheatstone bridge is widely used for precision measurement of resistance:

A) from 1 Ω to few MΩ

B) very low resistance

C) very high resistance

D) 1 mΩ - 10 kΩ

E) 0.1Ω - 100 kΩ

Choose the correct answer from the options given below:

1. (A) only
2. (A) and (B) only
3. (B) and (C) only
4. (D) and (E) only

Answer 1

Correct Answer - Option 1 : (A) only

Wheatstone is used for the measurement of a medium value range of resistance from 1 Ω to a few M Ω.

Type of Bridge	Name of Bridge/Method	Used to measure	Important
DC Bridges	Wheatstone bridge	Medium resistance	1Ω to few MΩ
	Corey foster’s bridge	Medium resistance	1Ω to few MΩ
	Kelvin double bridge	Very low resistance	Below 1Ω
	Loss of charge method	High resistance	Above MΩ
	Megger	High insulation resistance	Resistance of cables
AC Bridges	Maxwell’s inductance bridge	Inductance	Not suitable to measure Q
	Maxwell’s inductance capacitance bridge	Inductance	Suitable for medium Q coil (1 < Q < 10)
	Hay’s bridge	Inductance	Suitable for high Q coil (Q > 10), slowest bridge
	Anderson’s bridge	Inductance	5-point bridge, accurate and fastest bridge (Q < 1)
	Owen’s bridge	Inductance	Used for measuring low Q coils
	Heaviside mutual inductance bridge	Mutual inductance
	Campbell’s modification of Heaviside bridge	Mutual inductance
	De-Sauty’s bridge	Capacitance	Suitable for perfect capacitor
	Schering bridge	Capacitance	Used to measure relative permittivity, dielectric loss
	Wein’s bridge	Capacitance and frequency	Harmonic distortion analyzer, used as a notch filter, used in audio and high-frequency applications