A battery of ? = 2.70 V and internal resistance R = 0.700 ? is driving a motor. The motor is lifting a 2.0 N mass at constant speed v = 0.50 m/s. Assuming no energy losses, find the current i in the circuit. Enter the lower current. Enter the higher current. Find the potential difference V across the terminals of the motor for the lower current. Find the potential difference V across the terminals of the motor for the higher current.