This question asks for the standard international (SI) unit used to measure heat energy transferred.
Understanding Heat Energy Units
Heat energy is a form of energy. The SI system provides standard units for all physical quantities.
- Heat Energy: Represents the transfer of thermal energy between systems due to a temperature difference.
- SI Unit System: A globally recognized system of measurement.
Identifying the Correct SI Unit
The SI unit for all forms of energy, including heat energy, is the Joule.
- Joule (J): The standard SI unit for energy, work, and also heat energy transferred. It's defined as the energy transferred when a force of one Newton acts over a distance of one meter.
Evaluating Other Options
Let's look at why the other options are incorrect:
- Kilowatt (kW): This is a unit of power (energy per unit time), not energy itself. 1 kW = 1000 Watts.
- Amperes (A): This is the SI unit of electric current.
- Kelvin (K): This is the SI unit of thermodynamic temperature.
Therefore, the correct SI unit for heat energy transferred is the Joule.
Similar Questions
- The body of the cooking vessel is of metal and handles are of plastic because ______.
- ______ is the unit of thermal conductivity.
- The heat generated while transferring 96000 coulomb of charge in one hour through a potential difference of 50 V is
- An electric iron of resistance 20 ohm takes a current of 5 A. The heat flow in 30 s is:
- The volume of a given amount of water ______ when its temperature is increased from \(0^\circ\text{C}\) to \(4^\circ\text{C}\).
Which statement correctly differentiates heat and temperature based on their SI units?
Which of the following is NOT an effect of heat?
Which statement correctly defines the temperature of a body?
Find the mass (in g) of a copper calorimeter if its temperature rises by 45° when it absorbs 3.6 kJ of heat. The specific heat capacity of copper is 0.4 Jg⁻¹K⁻¹.
The specific latent heat of fusion of ethyl alcohol is 100 Jg⁻¹. Find the heat absorbed (in J) by 2.25 g of ethyl alcohol when it melts at its melting point of -114°C.
Important Questions from Heat and Transfer
In summer season, the top and outer surface of the house are painted white because:
On a hot summer afternoon, the tent made up of fabric will be preferred as white colour is:
The coil of wire used in electric heaters is called a/an________.
Transfer of heat by convection can take place in
A body in motion essentially acquires
A. Kinetic energy
B. Potential energy
C. Mechanical energy
D. Heat energy
