Two current sources deliver current to a common load. The first source delivers a current whose equation is 25 sin 100zt amperes while the second a current whose equation is 15 cos 100rt amperes. What is the rms value of the current in the load.

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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).