In the shown Wheatstone circuit, if a conducting wire is connected between A and B, the current in this wire will: [Diagram: Image]
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In the shown Wheatstone circuit, if a conducting wire is connected between A and B, the current in this wire will: [Diagram: Image]

G1 Physics · Accepted Answer

Step 1: Use voltage division in each arm with resistors 4 Ω+1 Ω (left) and 4 Ω+3 Ω (right). Step 2: Upper node A potential and lower node B potential relative to common left/right terminals differ. Step 3: The 4:1 and 4:3 ratios are not balanced, so current is nonzero and flows from higher potential B to lower potential A.