Question 49
How long will it take to heat 3 kg of water from 28oC to 88oC in an electric taking a current of 6 A from an e.m.f. source of 220V?
Objective
Question details
- Exam body
- WAEC
- Subject
- Physics
- Year
- 1990
- Question no.
- #49
- Type
- Objective
More from this paper
- Q45Calculate the resistance of the filament of a lamp rates 240 V, 40 W
- Q46Birds can perch safely on overhead electric power cables without being…
- Q47A cell of e.m.f. 1.5 V and internal resistance of 2.59 is connected in series…
- Q51Which of the following particles conduct electricity through salty water?
- Q52When the pressure of the gas in a discharge tube is gradually lowered. I. there…
- Q53Which of the following statements about the atom is/are correct? I. Energy is…