What is J by electrical method?

What is J by electrical method?

Joule heating, also known as resistive, resistance, or Ohmic heating, is the process by which the passage of an electric current through a conductor produces heat.

How do you find joules constant?

This constant is sometimes called the “mechanical equivalent of heat”, because early experiments usually involved the conversion of mechanical energy to heat. In this experiment we will measure the Joule constant by converting electrical energy to heat. Q = mcw(Tf – Ti) where cw = 1 cal/g·°C.

What was Joule’s experiment?

In his most famous experiment. Joule attached some weights to strings and pulleys and connected them to a paddle wheel inside an insulated container of water. Then he raised the weights to an appropriate height and slowly dropped them. As they fell, the paddle wheel began to turn, stirring up the water.

How do you calculate electrical equivalent of heat?

Analysis: Calculate the Electrical Equivalence of Heat = E/Q.

What is Joule’s mechanical equivalent of heat?

Hint: The Joule’s mechanical equivalent of heat is defined as the amount of work that must be done in the form of mechanical energy on a system to produce heat energy. It is defined as the ratio of the work done on the system and heat energy generated by the system.

What is Joule calorimeter?

Joule’s Calorimeter, useful for conducting the electrical method of determining the specific heat capacity of a liquid. Comprises of a nickel plated copper calorimeter measuring 3″ tall and 2″ in diameter. Lagged and enclosed within an outer vessel measuring 4″ tall and 2.75″ in diameter.

What is joule formula?

The dimensional formula of Joule is given by, [M1 L2 T-2]

What did James Joule’s findings lead to?

Joule’s findings resulted in his development of the mechanical theory of heat and Joule’s law, which quantitatively describes the rate at which heat energy is produced from electric energy by the resistance in a circuit.

What is Joule mechanical equivalent?

Joule proved that mechanical work is converted into heat and the ratio of the work done to the heat is always a constant, represented by J. It is also known as Joule’s Mechanical Equivalent of Heat.

What is the relationship between electrical mechanical and thermal energy?

Relationship Among Energy Units: The energy whether possessed by an electrical system or mechanical system or thermal system has the same thing in common i.e., it can do some work. Therefore, mechanical, electrical and thermal energies must have the same unit.