Answer:
Explanation:
Let the four resistances of th wheat stone bridge is 
P, Q, R and S and the value of each is 350 ohm. 
Here, P and Q are in series. 
R' = P + Q = 350 + 350 = 700 ohm 
Then R and S are in series 
R' = R + S = 350 + 350 = 700 ohm 
Now R' and R'' are in parallel. 
So, the equivalent resistance is 
Req = R' x R'' / ( R' + R'') 
Req = 700 / 2 = 350 ohm 
Thus, the reading of ohmmeter is 350 ohm.