Consider these statements: (I) Ohm’s Law fails at very low and very high tempera

1. Consider these statements: (I) Ohm’s Law fails at very low and very high temperatures, (II) Ohm’s Law applies to semiconductors in general, (III) Ohm’s Law does not apply to electron tubes, discharge tubes, or electrolytes, and (IV) conductance, resistance’s reciprocal, is measured in siemens. Which are correct?