allery200 V પર 100 W રેટેડ લેમ્પ 5 h માટે 100 V પર ચાલે છે. સતત પ્રતિકાર ધારો. ₹8 પ્રતિ kWh, તેની કિંમત શું છે?
A₹8
B₹1
C₹4
D₹2
Answer & Solution
Correct answer: B. ₹1
તેનો પ્રતિકાર 400 Ω છે, તેથી 100 V પર તે 25 W વાપરે છે, 5 h માં 0.125 kWh વાપરે છે અને તેની કિંમત ₹1 છે.
Keep practising General Science and Everyday Applications
Browse all General Science and Everyday Applications questions for RPF Constable, or explore more General Awareness topics.
Related questions
Everyday science resultsTwo 12 Ω resistors run across 12 V: first in series for 1 min, then in parallel for 1 min.A 4 Ω resistor is in series with a parallel pair of 6 Ω and 3 Ω across 12 V. Find total cuBulbs rated 60 W and 40 W at 200 V are connected in series across 200 V. Assume constant rResistors of 6 Ω and 3 Ω are in parallel across an ideal 6 V battery. What are the total cA child stands 1.5 m from a plane mirror, then moves 0.5 m towards it. What is the new chiMatch heat transfer: along a metal spoon; circulating water; sunlight through space.Which plan best interrupts cholera’s usual route of spread?