Insert the EEH Jar into one of the styrofoam Calorimeters. Insert your thermometer or thermistor probe through the hole in the top of the EEH Jar. Stir the water gently with the thermometer or probe while observing the temperature.

the EEH Jar. Connect a voltmeter and ammeter as shown in Figure 1.1 so you can measure both the current through the lamp and the potential difference across the lamp.

The electrical equivalent of heat (J) is J = Q/H (4) Important instructions: When using the Electrical Equivalent of Heat (EEH) Apparatus, always observe the following precautions: Do not fill the water beyond the line indicated on the EEH Jar.

In experiment A you will measure the proportional relationship of mechanical energy to thermal energy, which is known as Joule's constant [4.184 J/cal (Joules per calorie)]. In experiment B you will, using a light bulb, convert electrical energy into heat from which you will determine Joule's constant again for this process.

012-02833D Electrical Equivalent of Heat Experiment 1: The Electrical Equivalent of Heat Measure and record the room temperature (Tr). Weigh the EEH Jar (with the lid on), and record its mass (Mj). Remove the lid of the EEH Jar and fill …

Using leads with banana plug connectors, attach your power supply to the terminals of the EEH Jar. Connect a voltmeter and ammeter as shown in Figure 1 so you can measure both the current (I) and voltage

Remove the lid of the EEH Jar and fill the jar to the indicated water line with cold wa- ter. DO NOT OVERFILL. The water should be approxmately 10°C below room tem-

There is some transfer of thermal energy between the EEH Jar and the room atmosphere. (What is the. Here’s the best way to solve it. Consider how the incompletely opaque inked water might affect the measurement of light absorption and whether this might lead to any errors in determining the Electrical Equivalent of Heat. QUESTIONS 1.

the EEH Jar. Connect a voltmeter and ammeter as shown in Figure 1.1 so you can mea-

Insert the EEH Jar into one of the styrofoam Calorimeters. Insert your thermometer or thermistor probe through the hole in the top of the EEH Jar. Stir the water gently with the thermometer or probe while observing the temperature.