200 V 'ਤੇ 100 W ਰੇਟ ਕੀਤਾ ਗਿਆ ਇੱਕ ਲੈਂਪ 5 h ਲਈ 100 V 'ਤੇ ਚੱਲਦਾ ਹੈ। ਲਗਾਤਾਰ ਪ੍ਰਤੀਰੋਧ ਮੰਨ ਲਓ। ₹8 ਪ੍ਰਤੀ kWh, ਇਸਦੀ ਕੀਮਤ ਕੀ ਹੈ?
A₹8
B₹1
C₹4
D₹2
Answer & Solution
Correct answer: B. ₹1
ਇਸਦਾ ਵਿਰੋਧ 400 Ω ਹੈ, ਇਸਲਈ 100 V 'ਤੇ ਇਹ 25 W ਦੀ ਵਰਤੋਂ ਕਰਦਾ ਹੈ, 5 h ਵਿੱਚ 0.125 kWh ਦੀ ਖਪਤ ਕਰਦਾ ਹੈ ਅਤੇ ₹1 ਦੀ ਲਾਗਤ ਆਉਂਦੀ ਹੈ।
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