_____________CELLS_PRODUCE_A_VOLTAGE_AND_CURRENT_THAT_ARE_A_FUNCTION_OF_THE_LIGHT_LEVEL_INCIDENT_TO_THEM._THESE_HAVE_TIME_CONSTANTS_ON_THE_ORDER_OF_1_TO_100_µS.?$#

• A. Thermocouple
• B. Photoconductors
• C. Photovoltaic
• D. Piezoelectric