Which of the following statement is/are incorrect?

  1. The Meter bridge works on the principle of the Wheatstone bridge.
  2. A Meter bridge is used to find the unknown resistance.
  3. A meter bridge is used to find the internal resistance of the battery.
  4. The meter bridge cannot be used to measure the very high or very low resistance.

Answer (Detailed Solution Below)

Option 3 : A meter bridge is used to find the internal resistance of the battery.
Free
NDA 01/2025: English Subject Test
5.3 K Users
30 Questions 120 Marks 30 Mins

Detailed Solution

Download Solution PDF

CONCEPT:

F1 P.B 8.5.20 Pallavi D5

 

  • Meter bridge: Meter bridge is instruments based on the principle of Wheatstone bridge and is used to measure an unknown resistance.
  • In the case of a meter bridge, the resistance wire AC is 100 cm long. Varying the position of tapping point B, the bridge is balanced.
  • If in the balanced position of bridge AB = l, BC (100 – l) so that

\(\frac{Q}{P} = \frac{{\left( {100 - l} \right)}}{l}\)

Also, \(\frac{P}{Q} = \frac{R}{S} \Rightarrow S = \frac{{\left( {100 - l} \right)}}{l}R\)

EXPLANATION:

  • From above it clear that the meter bridge works on the principle of Wheatstone bridge. Therefore, option 1 is correct.
  • The Meter Bridge is instruments based on the principle of Wheatstone bridge and is used to measure an unknown resistance. Therefore option 2 is correct.
  • A potentiometer is a device which used to measure the internal resistance of the battery. Therefore option 3 is incorrect.
  • The meter bridge is sensitive when the resistance of all four arms of the bridge are off the same order.
  • Two parts of the meter bridge wire form two arms with small values of resistance. So other resistances to be compared should also be comparable and hence small. Therefore, option 4 is correct.
Latest NDA Updates

Last updated on May 30, 2025

->UPSC has released UPSC NDA 2 Notification on 28th May 2025 announcing the NDA 2 vacancies.

-> A total of 406 vacancies have been announced for NDA 2 Exam 2025.

->The NDA exam date 2025 has been announced for cycle 2. The written examination will be held on 14th September 2025.

-> Earlier, the UPSC NDA 1 Exam Result has been released on the official website.

-> The selection process for the NDA exam includes a Written Exam and SSB Interview.

-> Candidates who get successful selection under UPSC NDA will get a salary range between Rs. 15,600 to Rs. 39,100. 

-> Candidates must go through the NDA previous year question paper. Attempting the NDA mock test is also essential. 

More Meter Bridge Questions

Get Free Access Now
Hot Links: teen patti joy apk happy teen patti teen patti all games teen patti cash all teen patti game