Question
Download Solution PDFएक परिपथ में धारा को मापने के लिए एक साधारण सर्पण तार विभवमापी का उपयोग किया जाता है। 0.2 Ω के एक मानक प्रतिरोधक में वोल्टेज पात, 75 cm पर संतुलित होता है। यदि 1.5 V का मानक सेल emf, 50 cm पर संतुलित होता है तो धारा का परिमाण ज्ञात कीजिए।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe standard cell emf 1.5 volt is balanced at 50 cm
The voltage drop per unit length = 1.5/50 = 30 mV/cm
The voltage drop across a standard resistor of 0.2 Ω is balanced at 75 cm
The voltage drop across 75 cm length = 30 × 10-3 × 75 = 2.25 V
The resistance of 75 cm length wire = 0.2 Ω
Current through the circuit = 2.25/0.2 = 11.25 ALast updated on May 9, 2025
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