Calculate the quantity of heat for copper rod whose thermal capacity is 400Jk\(^{-1}\) for a temperature change of 60ºC to 80ºC
A
2KJ
B
4KJ
C
6KJ
D
8KJ
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
Quantity of Heat = heat capacity x change in temperature
Q = C\(_p\) x \(\Delta\)\(\theta\)
Q = 400 x 20 = 8000J = 8kJ
Source: WAEC / JAMB / NECO Classroom Archive (Record #70474)