Question

The heat produced by a 100 W heater in 2 min is equal to
1) 2.8 kcal
2) 1.4 kcal

Answer 1

Answer:

Power of heater (P) =100 W and time (t) = 2 min = 120 sec.

Work done to produce heat (W) = P x t

W = 100 × 120 = 12000j = 12kj

Correct answer/ option = 12kj

Explanation:

There should be 4 options, not just 2. Check your question again.