dummy load

noun

a resistive component that absorbs all the output power of an electrical generator or radio transmitter in order to simulate working conditions for test purposes

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012