Final answer:
The claim that voltage and resistance are directly related is false according to Ohm's law, which states that current is inversely proportional to resistance, with voltage constant.
Step-by-step explanation:
The statement that voltage and resistance are directly related is false. According to Ohm's law, voltage (V) is the product of current (I) and resistance (R), expressed as V = IR. When voltage increases and current is constant, resistance would need to decrease to maintain this relationship. In contrast, if resistance increases, for a constant voltage, the current would decrease. Therefore, voltage and resistance are not directly related in the way that 'voltage goes up, resistance goes up, and vice versa'. Instead, current is inversely proportional to resistance while voltage is kept constant.
It is important to note that resistance restricts the flow of electric current in a circuit, and it is affected by factors such as the material's nature, temperature, and physical dimensions. Also, Ohm's law is a linear relationship that applies to many electrical conductors, but not all materials follow Ohm's law strictly.