An immersion heater is rated 120W. How long does it take the heater to raise...
PHYSICS
WAEC 2000
An immersion heater is rated 120W. How long does it take the heater to raise the temperature of 1.2kg of water by 15oC. (Assuming heat lost to the surrounding is negligible. Specific heat capacity of water = 4200 Jkg-1K-1C)
- A. 65.0 minutes
- B. 60.0 minutes
- C. 52.5 minutes
- D. 10.5 minutes
Correct Answer: D. 10.5 minutes
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *