RRB ALP practice question
Two resistances of 40 Ω each are connected in parallel. This combination is then connected in series with a third resistance of 30 Ω and a 10 V battery. The power supplied by the battery will be _______.
From a RRB ALP Science practice set · Science
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Correct answer: (D) 2 W
Parallel resistance = 40/2 = 20 Ω. Total resistance = 20 + 30 = 50 Ω. Power = V²/R = 10²/50 = 2 W.
हिंदी में प्रश्न
40 Ω के दो प्रतिरोध समांतर क्रम में जुड़े हैं। यह संयोजन एक तीसरे 30 Ω प्रतिरोध और 10 V बैटरी के साथ श्रेणीक्रम में जुड़ा है। बैटरी द्वारा प्रदत्त शक्ति _______ होगी।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) 2 W
समांतर प्रतिरोध = 40/2 = 20 Ω। कुल प्रतिरोध = 20 + 30 = 50 Ω। शक्ति = V²/R = 10²/50 = 2 W।
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