A) The Wheatstone bridge is most sensitive when all the four resistances are of the same order
B) In a balanced Wheatstone bridge, interchanging the positions of galvanometer and cell affects the balance of the bridge
C) Kirchhoff's first law (for currents meeting at a junction in an electric circuit) expresses the conservation of charge
D) The rheostat can be used as a potential divider
Correct Answer: B
Solution :
In balanced Wheatstone bridge, the arms of galvanometer and cell can be interchanged without affecting the balance of the bridge.
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