একটি 60 মাইক্রোঅ্যাম্পিয়ার মিটারের 100 ওহমের প্রতিরোধ ক্ষমতা রয়েছে। যদি মিটারকে 100 mA পরিমাপ করতে হয়, তাহলে শান্টের মাধ্যমে কারেন্টের মান

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ALP CBT 2 Electrician Previous Paper: Held on 23 Jan 2019 Shift 2
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  1. 100 mA
  2. 99.2 mA
  3. 99.9 mA
  4. 150 mA

Answer (Detailed Solution Below)

Option 3 : 99.9 mA
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Detailed Solution

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ধারণা :

\({R_{sh}} = \frac{{{R_m}}}{{M - 1\;}}\)

Where,

Rsh শান্ট প্রতিরোধ

Rm = মিটার প্রতিরোধ 

M = গুণনীয় মান 

M = (বর্তমান মান)/(প্রাক-বিদ্যমান মান)

গণনা :

\(M = \;\frac{{100 \times {{10}^{ - 3}}}}{{60 \times {{10}^{ - 6}}}} = 1666.67\;\)

\({R_{sh}} = \frac{{100}}{{1666.67 - 1\;}} = \frac{{100}}{{1665.67}} = 0.06\;{\rm{\Omega }}\)

এখন 2য় সার্কিটে বর্তমান বিভাজন নিয়ম প্রয়োগ করে, আমরা পাই

\({I_{sh}} = \frac{{100 \times {{10}^{ - 3}} \times 100}}{{100.06}} = 99.9\;mA\)
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