A potential difference of 220 V is maintained across a 12000 ohm rheostat, as shown in the figure. The voltmeter has a resistance of 6000 ohm and point c is at one-fourth of the distance from a to b. Therefore, the reading of the voltmeter is A potential difference of 220 V is maintained across a 12000 ohm rheostat as shown in the figure. The voltmeter has a resistance of 6000 ohm and point c is at one-fourth of the distance from a to b. Therefore the reading of the voltmeter is December 1, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - Current Electricity , Part 2 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related