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
- 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 _____.
Which of the following options is correct when two objects at the same temperature are kept in contact with each other?
Two containers, one painted black and the other painted white, have been kept in sunlight for one hour in the afternoon. Choose the correct observation.
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 copper spoon is dipped in hot water. What happens to its other end?
The heat developed in a 5 ohm resistor in 2 minutes when a 2A current passes through it is ________.
Important Questions from Heat transfer
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
A wooden spoon is dipped in a cup of ice-cream. Its other end
