Use kirchhoff’s loop rule to write another equation relating the currents you defined in part b) to the resistances in the bridge circuit. e)simultaneously solve the equations you found in c) and d) to find a relationship between xrand the known resistances. any currents should cancel out. f)suppose your bridge is "unbalanced" —that is, the potentials at aand bare not the same. write an expression for the potential difference bavv−as a function of the input voltage and the resistances in the bridge circuit.