alleryબે 12 Ω રેઝિસ્ટર સમગ્ર 12 V પર ચાલે છે: પ્રથમ શ્રેણીમાં 1 મિનિટ માટે, પછી 1 મિનિટ માટે સમાંતરમાં. કુલ કેટલી ઊર્જા વપરાય છે?
A1800 J
B1080 J
C720 J
D1440 J
Answer & Solution
Correct answer: A. 1800 J
શ્રેણીના તબક્કામાં (12²/24) × 60 = 360 J અને સમાંતર તબક્કામાં (12²/6) × 60 = 1440 Jનો ઉપયોગ થાય છે, કુલ 1800 J.
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