Heat Supplied Measurement Unit
Heat supplied to a system represents the transfer of energy. The standard international (SI) unit for energy, and therefore for heat transfer, is the Joule.
Understanding Measurement Units
Let's analyze the given options:
- Joules (J): The SI unit of energy, work, and heat. This is the correct unit for measuring heat supplied.
- Degrees Kelvin (K): The SI base unit for thermodynamic temperature. It measures how hot or cold something is, not the amount of heat energy transferred.
- Amperes (A): The SI unit of electric current. It measures the flow rate of electric charge.
- Kilowatts (kW): A unit of power, which is the rate at which energy is transferred or used (1 kilowatt = 1000 Joules per second). While related to heat transfer rates, it's not the unit for the total heat supplied itself.
Therefore, heat supplied to a system is measured in Joules.
Similar Questions
A copper spoon is dipped in hot water. What happens to its other end?
- Generally, what is the process of heat transfer in liquids?
- Which of the following processes is primarily responsible for heat loss from a hot utensil?
A brass rod (thermal conductivity 109 J/s m K) has an area of cross section 0.04 m 2and length 20 cm. If the two end of the rod are maintained at a temperature difference of 200°C, the rate of heat flow through the rod is ________.
A black surface absorbs ________ as compared to a white surface, under identical conditions.
- The change of state from ice to water is accompanied by ______.
- _____ is a mode of heat transfer by actual motion of matter.
- _____ is the unit of thermal conductivity.
- A brick wall having a thickness of 24 cm has an inner surface temperature of \(25^{\circ}C\) and an outer surface temperature of \(5^{\circ}C\). The rate of heat loss through per square metre of the wall (thermal conductivity = \(0.15\ J/(s\cdot m \cdot K)\)) is:
- Conduction and convection modes of heat transfer CANNOT operate between bodies separated by _____.
Important Questions from Heat transfer
The process by which heat is transferred from the hotter end to the colder end of an object is known as ______.
If a liquid is heated in weightlessness the heat is transmitted through
An iron ball at 60°C is dropped in a mug containing water at 60°C. The heat will
The temperatures of two perfect black bodies A and B are 400 K and 200 K, respectively. If the surface area of A is twice that of B, the ratio of total power emitted by A to that by B is
The volume and temperature of a spherical cavity filled with black body radiation are V and 300 K, respectively. If it expands adiabatically to a volume 2V, its temperature will be closest to
