How is the specific heat capacity practical done?

In the specific heat capacity practical take a reading of the initial temperature, then turn the power supply and stop-clock at the same time. Now find the power by counting the number of flashes on a joule meter per second and multiplying that by 100, although because this power can get lost when it goes into the heater the power can also be measured with a voltmeter. To do this put an ammeter in series with the component and put a voltmeter around the component, then multiply the readings of voltage and current = power Now draw a graph of the time in seconds on the x-axis against the temperature in degrees Celsius on the y axis Then find the specific heat capacity using the equation SHC = power/mass x time/temperature change Finally, repeat the practical using the copper and gold block to see how their SHCs compare.