Work, Power and EnergyHard
Question
A wire when connected to 220 V mains supply has power dissipation P1. Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is P2. Then P2 : P1 is
Options
A.1
B.4
C.2
D.3
More Work, Power and Energy Questions
A block of mass m = 0.1 kg is connected to a spring of unknown spring constant k. It is compressed to adistance x from r...For which combination of working temperatures the efficiency of Carnot′s engine is highest :-...An electron of mass m and a photon have same energy E. the ratio of de-Broglie wavelengths associatedwith them is:...If the length of a heater wire of 1000W, 220V is reduced by 20% then the power consumption will be...Position of a particle of mass 2 kg is given by x = + t2, then what will be the work done in first two seconds :-...