A 500 W heating unit is designed to operate on a 115 V line. If line voltage drops to 110 V , the percentage drop in heat output will be: A 500 W heating unit is designed to operate on a 115 V line. If line voltage drops to 110 V the percentage drop in heat output will be: December 6, 2020 Category: Cengage NEET by C.P Singh , Chapter 18 - Temperature and Thermal Expansion , Part 2 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related