A block of aluminum is heated electrically by a 30 w heater if the temperature rises by 10°c in 5 minutes, the heat capacity of the aluminum is
A
900 JK-1
B
90 JK-1
C
100 JK-1
D
200 JK-1
Verified Correct Answer: A.
Physical Principles & Numerical Solution
Heat supplied = Heat gained Pt = MCDθ
30 x 5 x 60 = c x 10
where c = mc which is the heat capacity
c = (30 x 5 x60)/10 = 900 JKg-1
Source: Myschool Past Questions Archive (Record #14420)