একটি বৈদ্যুতিক বাল্ব একটি 200 V জেনারেটরের সাথে সংযুক্ত। বৈদ্যুতিক প্রবাহ 0.5 A হলে, বাল্বের ক্ষমতা কত?

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ALP CBT 2 Physics and Maths Previous Paper 4 (Held On: 22 Jan 2019 Shift 1)
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  1. 10 W
  2. 1000 W
  3. 1 W
  4. 100 W

Answer (Detailed Solution Below)

Option 4 : 100 W
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ধারণা :

  • বৈদ্যুতিক ক্ষমতা: যে হারে বৈদ্যুতিক শক্তি অন্যান্য শক্তির মধ্যে ছড়িয়ে পড়ে তাকে বৈদ্যুতিক ক্ষমতা বলে অর্থাৎ,

\(P = \frac{W}{t} = VI = {I^2}R = \frac{{{V^2}}}{R}\)

যেখানে V = বিভব পার্থক্য, R = রোধ এবং I = বৈদ্যুতিক প্রবাহ

গণনা :

প্রদত্ত: বিভব পার্থক্য (V) = 200 V এবং বৈদ্যুতিক প্রবাহ (I) = 0.5 A

  • বৈদ্যুতিক ক্ষমতা নিম্নরূপে লেখা যেতে পারে,

⇒ P = VI

⇒ P = 200 × 0.5 = 100 ওয়াট

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