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Study the circuit diagram in figure 1 and answer the following questions.
(a) Calculate the effective resistance between Y and Z.
(b) Determine the current through the 3#Omega# resistor.
(c) One of the 6#Omega# resistors has a length of 1.0m and cross-section area of 5.0 x #10^-6 m^2#. Calculate the resistivity of the material.