https://physlab-wiki.com/ 2026-04-17T01:51:29+00:00 https://physlab-wiki.com/ https://physlab-wiki.com/lib/tpl/UChicago/images/favicon.ico text/html 2021-09-15T17:03:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/electricity_and_magnetism/electromotive_force_and_current/measure_internal_resistance_of_a_battery?rev=1631739824&do=diff Measure Internal Resistance of a Battery A battery is connected in series with a variable decade resistance box. A projection voltmeter is used to monitor the voltage across the battery as the resistance is varied. J4, A4, A0 top PIRA DCS 5E40.70 text/html 2021-09-15T17:04:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/electricity_and_magnetism/electromotive_force_and_current/thermoelectric_motor?rev=1631739854&do=diff Thermoelectric Motor A thermoelectric generator is used to power a small fan motor using separate containers of hot and cold water. P1 PIRA DCS 4FXX.XX