Figure below shows a multiloop circuit containing one ideal battery and four resistances with the following values: R1 = (R1+10) Q, R2 = (R2+20) 2, R3 = 30 N, R4 = 8.0 Q and battery with voltage of (10+R1+R2) V. R1 R3 R2 V R2+1 R4 Compute the following: a) What is the current through the battery? b) What is the current iz through R3? +

Q: R₁ = R E www www R₂ = 2R ww R₁=3R www R₂=4R

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Wheatstone Bridge Method

A Wheatstone bridge is a circuit used to measure unknown resistance by measuring the ratios of the two branches of the circuit such that each branch has two resistance and out of four resistance one is unknown. The two branches are joined in between with the help of galvanometer which is used to determine the direction of the current. The main advantage of this circuit is that it can provide the most accurate measurement (different from a simple voltage separator).