Understanding Electrical Resistance and Ohm's Law

What is resistance in electrical components primarily attributed to?

• The ease of electron flow

• The impedance to electron flow

• The temperature of the component

• The type of material only

How is resistance measured in terms of potential difference and current?

• Resistance equals the potential difference multiplied by the current

• Resistance is independent of current and potential difference

• Resistance equals the potential difference divided by the current

• Resistance equals the current divided by potential difference

Which unit is used to measure the potential difference?

• Ohm

• Ampere

• Volt

• Coulomb

What does Ohm's law state about a conductor at constant temperature?

• The potential difference has no effect on the current

• The current is directly proportional to the potential difference

• The resistance decreases with an increase in current

• The current is inversely proportional to the potential difference

What type of conductors does Ohm's law apply to?

• Insulators at any temperature

• Non-metallic conductors only

• Ohmic conductors, typically metals

• Superconductors at high temperatures