PhysicsQuantity of heatJAMB
A 1 kW heater warms 2 kg of water for 7 minutes with no heat losses. Find the rise in temperature. (c = 4200 J/(kg K))
Show answer
Answer: C. 50 K
Q = Pt = 1000 × 420 = 420 000 J; Δθ = Q/mc = 420 000/8400 = 50 K.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.