Three light bulbs of 40W, 60W and 100W are connected in series with a 240 volt source. 60W and 100W are connected in series with a 240 volt source. Three light bulbs of 40W December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 20 - Heating Effects of Current and Instruments , Facebook Messenger WhatsApp Share this:TwitterFacebook Related