EL.1 - LAMP BOARD

This lamp board demonstrates series and parallel circuits. Two sizes are available. It can demonstrate Kirchoff's circuit laws by measurements of voltage and current throughout the circuit. An interesting demonstration can be done using 25 watt and 200 watt light bulbs: when connected in series, the 25 watt bulb is brigher!! This lamp board does not obey Ohm's Law, since the resistance of the filaments depends on temperature, and then on voltage (or current).