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NEETPhysicsCurrent Electricity

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : In balanced Wheatstone bridge, the current through cell depends on resistance of galvanometer. Reason (R) : At balanced condition current through galvanometer is zero. In the light of the above statements, choose the most appropriate answer from the options given below:

Options

  1. ABoth (A) and (R) are true and (R) is the correct explanation of (A).
  2. BBoth (A) and (R) are true and (R) is NOT the correct explanation of (A).
  3. C(A) is true but (R) is false.
  4. D(A) is false but (R) is true.

Correct answer

D. (A) is false but (R) is true.

Step-by-step solution

- Assertion (A): "In a balanced Wheatstone bridge, the current through the cell depends on the resistance of the galvanometer." This is false. In a balanced Wheatstone bridge, the current through the cell depends on the external resistances, but the galvanometer has no current when the bridge is balanced. Therefore, the galvanometer's resistance does not affect the current through the cell in this condition. - Reason (R): "At balanced condition, the current through the galvanometer is zero." This is true because wh

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