Question
Heat supplied to a system is measured in ______.
The correct answer is
joules
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.
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Important Questions from Heat transfer
- Evaporation from the surface of a given liquid takes place more rapidly when
- The specific latent heat of vaporization of a substance is the quantity of heat needed to change unit mass from
The amount of heat required to change a liquid to gaseous state without any change in temperature is known as
A glass vessel is filled with water to the rim and a lid is fixed to it tightly. Then it is left inside a freezer for hours. What is expected to happen?
Statement I: While putting clothes for drying up, we spread them out.
Statement II: The rate of evaporation increases with an increase in surface area.
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