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CURRENT ELECTRICITY
Question #81124
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Question
How is the unknown resistance R₄ calculated when the bridge is balanced?
A. R₄ = R₁ + R₂ + R₃
B. R₄ = (R₁ × R₃) / R₂
C. R₄ = (R₃ × R₂) / R₁
D. R₄ = R₁ × R₂ × R₃
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