Question
In a Wheatstone bridge(see fig.), Resistances P and Q are approximately equal. When R = 400 $\Omega $, the bridge
is balanced. On interchanging P and Q, the value of R, for balance, is 405 $\Omega $. The value of X is close to :
In a Wheatstone bridge(see fig.), Resistances P and Q are approximately equal. When R = 400 $\Omega $, the bridge
is balanced. On interchanging P and Q, the value of R, for balance, is 405 $\Omega $. The value of X is close to :