Correct option is A
A
calorimeter is a device used to measure the quantity of
heat energy in a chemical reaction, physical process, or material.
It operates based on the principle of
heat transfer, where heat is exchanged between substances without any loss to the surroundings.
Some devices & units are:
Devices Measuring Unit
Ammeter Electric current
Voltmeter Potential difference
Resistor Resistance
Thermometer Temperature
Wattmeter Electrical energy
