The following question, consist of two words each that have a certain relationship to each other, followed by four lettered pairs of words. Select the lettered pair that has the same relationship as the original pair of words: Energy : Joule

The correct answer is: B. Ammeter : Current

Energy is a measure of the ability to do work. Joule is a unit of energy. An ammeter is a device used to measure electric current. Current is the flow of electric charge.

Axe is a tool used to chop wood. Grind is the act of rubbing something against a rough surface to make it smooth. Power is the rate at which work is done. Ampere is a unit of electric current. Resistance is the opposition to the flow of electric current.

In the original pair, energy is the general term and joule is the specific unit of measurement. In the answer pair, current is the general term and ammeter is the specific device used to measure it.