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Physics · PYQ NEET UG 2019(2)

English

दिए गए परिपथ में एक आदर्श वोल्टमीटर का पाठ्यांक है:

  1. 0.4 V
  2. 0.6 V
  3. 0 V
  4. 0.5 V

सही उत्तर · विकल्प 3

0 V

व्याख्या

Bridge is balanced since \( \frac{20}{30} = \frac{20}{30} \) or \( \frac{R_{AC}}{R_{CB}} = \frac{R_{AD}}{R_{DB}} \) i.e., potentials at points C and D are equal. Thus, the reading of the voltmeter connected between C and D is 0 V.
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