An immersion heater rated 400W, 220V is used to heat a liquid of mass 0.5kg....
PHYSICS
WAEC 2005
An immersion heater rated 400W, 220V is used to heat a liquid of mass 0.5kg. If the temperature of the liquid increases uniformly at the rate of 2.5oC per second, calculate the specific heat capacity of the liquid. [Assume no heat is lost]
- A. 1100Jkg-1K-1
- B. 320Jkg-1K-1
- C. 200Jkg-1K-1
- D. 176Jkg-1K-1
Correct Answer: B. 320Jkg-1K-1
Explanation
pt = mc\(\theta\)
C = \(\frac{pt}{m \theta}\)
= \(\frac{400 \times 1}{0.5 \times 2.5}\)
= 320Jkg-1K-1
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 Your email address will not be published.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 *