R Ω आणि 20 Ω चे दोन रोधक 15 Ω प्रभावी रोध मिळविण्यासाठी समांतर जोडणीत जोडलेले आहेत. R चे मूल्य शोधा.

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RRB ALP Fitter 21 Jan 2019 Official Paper (Shift 2)
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  1. 40
  2. 60
  3. 50
  4. 30

Answer (Detailed Solution Below)

Option 2 : 60
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General Science for All Railway Exams Mock Test
20 Qs. 20 Marks 15 Mins

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संकल्पना:

  • समांतर जोडणीतील रोध: जेव्हा दोन किंवा अधिक रोधांचे दोन बिंदू एकाच बिंदूंवर जोडलेले असतात आणि त्यांच्यातील विभवांतर समान असतो तेव्हा त्याला समांतर रोध म्हणतात.

समांतर जोडणीतील रोधाचा निव्वळ रोध/समतुल्य रोध (R) हा खालील सूत्राद्वारे दर्शविला जातो:

गणना:

दिलेले,

R

R

निव्वळ रोध/समतुल्य रोध  (R) = 15 Ω

समांतर जोडणीतील रोधासाठी खालील सूत्र वापरू:

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