Question

Which of the following bridges can be used for inductance measurement?
A. Wheatstone Bridge
B. Schering Bridge
C. Maxwell’s Bridge
D. Wein Bridge

Answer 1

Inductance is defined as the tendency of an electrical component to oppose the change in electric current flowing through it. Bridge here is meant by a special type of electrical circuit combination. So, from the above bridges mentioned here, we have to go through every bridge type to conclude which bridge is meant for inductance measurement.

Complete answer:
Analyzing every option we have arrived at a conclusion about every bridge in the options given here-
Wheatstone Bridge: A Wheatstone bridge is used to measure an unknown electrical resistance. It measures the resistance by balancing two legs of the circuit, one leg of which includes the unknown component. The importance of the circuit is its ability to provide accurate measurements. The Wheatstone bridge was invented by Samuel Hunter Christie in 1833 and improved and popularized by Sir Charles Wheatstone in 1843.

Schering Bridge: The Schering bridge is used for measuring the capacitance of the capacitor mainly. It is most commonly used in AC bridges. The Schering bridge works on the principle of balancing the load on its arm.

Maxwell’s Bridge: This bridge is used for the measurement of inductance. It is the advanced form of the Wheatstone Bridge. The Maxwell bridge works on the principle of the comparison which means that the value of unknown inductance is determined by comparing it with the known value or standard value.

Wein Bridge: The Wien’s bridge is used in AC circuits for determining the value of unknown frequency. The bridge measures the frequencies from $100{\text{ }}Hz$ to $1000{\text{ k}}Hz$. The accuracy of the bridges lies between $0.1$ to $0.5$ percent.

So, option C is the correct answer.

Note: Maxwell’s bridge is a modified form of Wheatstone Bridge. But it does not imply that Maxwell’s bridge also measures resistance. As it works in AC it measures inductance of the circuit. While the other bridges do not fall even to the same picture.