The authors have studied the electrical properties of rapidly quenched and unquenched bulk samples of granular Bi₂Sr₂CaCu₂O_x in the presence of a magnetic field. Both materials display simple power-law voltage-current behaviour. The application of a small magnetic field produces effects equivalent to raising the temperature. The implications of these measurements for possible models for granular superconductors are discussed. They note that in some samples the properties of the higher T_c rapidly quenched form decay to those of the lower T_c unquenched form over a period of days.