Physics
(i) State two differences between "Heat Capacity" and "Specific Heat Capacity".
(ii) Give a mathematical relation between Heat Capacity and Specific Heat Capacity.
Calorimetry
ICSE 2018
5 Likes
Answer
(i) Difference between "Heat Capacity" and "Specific Heat Capacity" are as follows :
| Heat Capacity | Specific Heat Capacity |
|---|---|
| It is the amount of heat energy required to raise the temperature of entire body by 1 °C. | It is the amount of heat energy required to raise the temperature of unit mass of the body by 1 °C. |
| The S.I. unit is JK-1 | S.I. unit is J kg-1K-1. |
(ii) Heat Capacity = Mass x Specific Heat Capacity
Answered By
4 Likes
Related Questions
The temperature of 170 g of water at 50°C is lowered to 5°C by adding a certain amount of ice to it. Find the mass of ice added.
Given: Specific heat capacity of water = 4200 J kg-1 ⁰C-1 and Specific latent heat of ice = 336000 J kg-1
(i) Heat supplied to a solid change it into liquid. What is this change in phase called?
(ii) During the phase change does the average kinetic energy of the molecules of the substance increase?
(iii) What is the energy absorbed during the phase change called?
An electric iron is rated 220V, 2 kW.
(i) If the iron is used for 2h daily, find the cost of running it for one week if it costs ₹4.25 per kWh.
(ii) Why is the fuse absolutely necessary in a power circuit?
The diagram shows a coil wound around a U shape soft iron bar AB.
(i) What is the polarity induced at the ends A and B when the switch is pressed?
(ii) Suggest one way to strengthen the magnetic field in the electromagnet.
(iii) What will be the polarities at A & B if the direction of current is reversed in the circuit?