Question

If in a Wheatstone bridge the battery and Galvanometer are interchanged, the condition for balance

• A. is disturbed
• B. is not disturbed
• C. depends on the internal resistance of the bridge
• D. depends on the values of the resistances in the bridge

Answer 1

Answer: (B)

is not disturbed

Case 1

$\frac{R_1}{R_2}=\frac{R_3}{R_4}$

Case 3

Simplified

$\frac{R_1}{R_3}=\frac{R_2}{R_4}$

$\frac{R_1}{R_2}=\frac{R_3}{R_4}$

Condition hasn't changed.