Explanation:
Saltwater is the best conductor of electricity because it contains dissolved ions (such as sodium (Na⁺) and chloride (Cl⁻)), which facilitate the flow of electric current. In contrast, distilled water is a poor conductor because it lacks these ions. Filtered water at room temperature may contain some impurities, making it a weak conductor. Filtered hot water can have slightly better conductivity than cold water, but it is still not as effective as saltwater.
When an electric current is passed through saltwater, the dissolved ions move freely, allowing the electricity to flow efficiently. This principle is widely used in applications like electrolysis and batteries. Thus, among the given options, saltwater is the best conductor of electricity.
Explanation by: Official MCQ Buddy
Saltwater is the best conductor of electricity because it contains dissolved ions (such as sodium (Na⁺) and chloride (Cl⁻)), which facilitate the flow of electric current. In contrast, distilled water is a poor conductor because it lacks these ions. Filtered water at room temperature may contain some impurities, making it a weak conductor. Filtered hot water can have slightly better conductivity than cold water, but it is still not as effective as saltwater.
When an electric current is passed through saltwater, the dissolved ions move freely, allowing the electricity to flow efficiently. This principle is widely used in applications like electrolysis and batteries. Thus, among the given options, saltwater is the best conductor of electricity.