A bridge circuit containing five resistors is connected to an ideal battery of potential difference \(\mathcal{E}\), as shown in the diagram. The resistances of the five resistors are \(R_1 = 20\text{ }\Omega\), \(R_2 = 60\text{ }\Omega\), \(R_3 = 60\text{ }\Omega\), \(R_4 = 20\text{ }\Omega\), and \(R_5 = 30\text{ }\Omega\).

What is the direction of the conventional current through resistor \(R_5\), and what happens to the total current delivered by the battery if resistor \(R_5\) is removed from the circuit?