allery100 W 200 V پر 5 h کے لیے 100 V پر چلتا ہے۔ مستقل مزاحمت فرض کریں۔ ₹8 فی kWh پر، اس کی قیمت کیا ہے؟
A₹8
B₹1
C₹4
D₹2
Answer & Solution
Correct answer: B. ₹1
اس کی مزاحمت 400 Ω ہے، لہذا 100 V پر یہ 25 W استعمال کرتا ہے، 5 h میں 0.125 kWh استعمال کرتا ہے اور اس کی قیمت ₹1 ہے۔
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