The resistances of the first and the second arms of a Wheatstone bridge are 10 ohm and 12 ohm respectively. The third arm contains an unknown resistance. When two parallel resistances each of 20 ohm are connected to the fourth arm of the bridge, it attains null condition. Find out the value of unknown resistance.

Related Topics

• session:2013-14
• session:2020-21
• session:2024-25
• session:2015-16
• session:2011-12
• session:2017-18
• session:2021-22
• session:2014-15
• session:2010-11
• session:2023-24
• session:2018-19
• session:2016-17
• session:2022-23
• session:2019-20