See the circuit with three branches, containing resistor R in top branch and emfs e₁, e₂ with resistors r₁, r₂. Which equation is correct? [Diagram: Image]
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Question

See the circuit with three branches, containing resistor R in top branch and emfs e₁, e₂ with resistors r₁, r₂. Which equation is correct? [Diagram: Image]

G1 Physics · Accepted Answer

Step 1: Apply KVL to loop including emf e₁, internal resistor r₁ and common resistor R. Step 2: Through R, branch current is i₁+i₂ from junction rule. Step 3: e₁−i₁r₁−(i₁+i₂)R=0.