Current Electricity and Electrical InstrumentHard
Question
Four resistance carrying a current as shown in the figure are immersed in a box containing ice at 0oC. The amount of ice that must be put in the box every 5.6 minute to keep the average quantity of ice in the box constant will be :-
Options
A.1200 gm
B.9000 gm
C.250 gm
D.5000 gm
Solution
ML = I2Rt but R = 50 W
M × 80 × 4.2 = (10)2 × (50) × 5.6 × 60
M = 5000 gm
M × 80 × 4.2 = (10)2 × (50) × 5.6 × 60
M = 5000 gm
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