10 × 0.25 ওয়াট LED ধারণকারী একটি ব্যাটারি ল্যাম্পের আনুমানিক রানটাইম। একটি 6 v-6 হিজরিতে চলছে:

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ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 3
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  1. 14 ঘন্টা 
  2. 16 ঘন্টা 
  3. 12 ঘন্টা 
  4. 10 ঘন্টা 

Answer (Detailed Solution Below)

Option 1 : 14 ঘন্টা 
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Detailed Solution

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অনুসৃত ধারণা:

শক্তি = ক্ষমতা × সময়

শক্তি = ভোল্টেজ × বিদ্যুৎ × সময়

গণনা:

শক্তি = 6 × 6 = 36 ওয়াট-ঘন্টা 

ক্ষমতা = 10 × 0.25 = 2.5 ওয়াট

সময় (t) = শক্তি/ক্ষমতা 

\(t = \frac{{36}}{{2.5}} = 14.4\;h \approx 14\;hours\)

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