हिंदी

Assertion (A): The given figure does not show a balanced Wheatstone bridge. Reason (R): For a balanced bridge small current should flow through the galvanometer. - Physics

Advertisements
Advertisements

प्रश्न

  • Assertion (A): The given figure does not show a balanced Wheatstone bridge.
  • Reason (R): For a balanced bridge small current should flow through the galvanometer.

 

विकल्प

  • Both Assertion (A) and Reason (R) are true and (R) is the correct explanation of (A).

  • Both Assertion (A) and Reason (R) are true and (R) is NOT the correct explanation of (A).

  • Assertion (A) is true and Reason (R) is false.

  • Assertion (A) is false and Reason (R) is also false.

MCQ

उत्तर

Assertion (A) is true and Reason (R) is false.

Explanation:

For a balanced Wheatstone Bridge,

`P/Q = R/S`

⇒ `2/3 = 3/2`

0.67 = 1.5

`P/Q ≠ R/S`

As a result, it isn't a balanced Wheatstone bridge. The current through a galvanometer must be zero in the case of a balanced Wheatstone bridge. As a result, the reason is incorrect and the statement is correct.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2022-2023 (March) Delhi Set 3

वीडियो ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्न

Four resistances 4Ω,8Ω,XΩ, and 6Ω are connected in a series so as to form Wheatstone’s
network. If the network is balanced, find the value of ‘X’.


What should be the value of R in the figure for which the current in it is zero?


In a meter bridge, the balance point is found to be at 39.5 cm from the end A when the resistor R is 12.5 Ω (right gap).

a) Determine the resistance of X (left gap).

b) Determine the balance point of the bridge if X and R are interchanged?

c) What happens if the galvanometer and cell are interchanged at the balance point of the bridge?


The current which flows in a galvanometer of Wheatstone bridge is directly proportional to ______


In Wheatstone's bridge P = 7 ohm, Q = 12 ohm, R = 3 ohm and S = 8 ohm. How much resistance must be put in parallel to the resistance S to balance the bridge?


In Wheatstone's network p = 2 `Omega` , Q = 2 `Omega`, R = 2 `Omega` and S = 3 `Omega`. The resistance with which S is to be shunted in order that the bridge may be balanced is ______.


When the value of R in the balanced Wheatstone bridge, shown in the figure, is increased from 5 `Omega` to 7 `Omega`, the value of s has to be increased by 3 `Omega` in order to maintain the balance. What is the initial value of S?


In the measurement of a resistance by the Wheatstone bridge, the known and the unknown resistance are interchanged to eliminate ____________.


When an unknown resistance 'X' is connected in the left gap of a meter bridge and a known resistance 'R' in the right gap, a null point is obtained at 40 cm from the left end. If a 2 Ω resistance is connected in series with 'X' the null point shifts towards the right by 10 cm, with some resistance in the right gap. The value of 'X' must be ______


Find the radius of the wire of length 25m needed to prepare a coil of resistance 25Ω. (Resistivity of material of wire is 3.142 x 10-7Ωm)


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×