four resistance of 3 ω, 3 ω, 3 ω and 4 ω respectively are used to form a wheatstone bridge. the 4 ω resistance is short-circuited with a resistance r in order to get bridge balanced. the value of r will be
four resistance of 3 ω, 3 ω, 3 ω and 4 ω respectively are used to form a wheatstone bridge. the 4 ω resistance is short-circuited with a resistance r in order to get bridge balanced. the value of r will be