Joule Heat Laboratory Report
PHYS 124 – 3:30 Th
Lab 5: Joule Heat
John Doe
4/3/2014
Introduction
The objective of this lab is to learn that whenever there is an electrical current in a conductor, there is some electrical energy that is converted into heat energy. The heat generated in an electrical circuit is commonly referred to as joule heat. Sir James Joule studies of these separate phenomena lead him to the discovery of the proportionality constant known as the Joule equivalent of heat, denoted by J. The Joule equivalent of heat is the amount of mechanical or electrical energy within a unit of heat energy. In many electrical applications joule heat is an undesirable loss of energy. However toasters and electrical heaters are purposefully converted into heat energy. In this experiment, the heating effect of electrical current and the electrical equivalent of heat will be investigated. The primary goal of this experiment is to show how the concept of heat energy relates to electrical energy
Materials and Method
In order to complete this experiment we used a combination of electrocalorimeter (immersion heater and calorimeter), power supply, ammeter (0 to 3 A), voltmeter (30 V), rheostat, connecting wires, thermometer, stopwatch, laboratory balance, and ice. In order to obtain the data, the DataStudio™ software is set up on the computer to use the temperature sensor on the apparatus to collect steadily the temperatures at specified time interval of 5-seconds. After the computer is completely set-up, the rest of the apparatus is collected. Water is added to the calorimeter until it is about 2-inches away from being completely full. In order to lower the temperature of the water, a few ice cubes are added. Once the ice is completely melted, the calorimeter is cautiously placed into the apparatus to ensure that they heating-coil and temperature probe do not touch. The voltage is set to a constant amount of approximately 6-volts. The voltmeter is wired directly to the
Lab 5: Joule Heat
John Doe
4/3/2014
Introduction
The objective of this lab is to learn that whenever there is an electrical current in a conductor, there is some electrical energy that is converted into heat energy. The heat generated in an electrical circuit is commonly referred to as joule heat. Sir James Joule studies of these separate phenomena lead him to the discovery of the proportionality constant known as the Joule equivalent of heat, denoted by J. The Joule equivalent of heat is the amount of mechanical or electrical energy within a unit of heat energy. In many electrical applications joule heat is an undesirable loss of energy. However toasters and electrical heaters are purposefully converted into heat energy. In this experiment, the heating effect of electrical current and the electrical equivalent of heat will be investigated. The primary goal of this experiment is to show how the concept of heat energy relates to electrical energy
Materials and Method
In order to complete this experiment we used a combination of electrocalorimeter (immersion heater and calorimeter), power supply, ammeter (0 to 3 A), voltmeter (30 V), rheostat, connecting wires, thermometer, stopwatch, laboratory balance, and ice. In order to obtain the data, the DataStudio™ software is set up on the computer to use the temperature sensor on the apparatus to collect steadily the temperatures at specified time interval of 5-seconds. After the computer is completely set-up, the rest of the apparatus is collected. Water is added to the calorimeter until it is about 2-inches away from being completely full. In order to lower the temperature of the water, a few ice cubes are added. Once the ice is completely melted, the calorimeter is cautiously placed into the apparatus to ensure that they heating-coil and temperature probe do not touch. The voltage is set to a constant amount of approximately 6-volts. The voltmeter is wired directly to the