In a wheatstone bridge(see fig.), resistances P and Q are approximately equal. When R=400 , the bridge is equal. When R=400, the bridge is balanced. On inter-changing P and Q, the value of R, for balance, is 405 . The value of x is closed to:
In a wheatstone bridge(see fig.), resistances P and Q are approximately equal. When R=400 , the bridge is equal. When R=400, the bridge is balanced. On inter-changing P and Q, the value of R, for balance, is 405 . The value of x is closed to: