instruction:
You are given a sentence and your task is to generate another sentence that supports the given input.
question:
An electrical circuit is a network consisting of a closed loop, giving a return path for the current.
answer:
Because charges must have an unbroken path to follow, electric current cannot flow through a material unless it forms a closed loop.

question:
A calorie is a unit used to measure energy.
answer:
Another unit of energy, used widely in the health professions and everyday life, is calorie ( cal )?

question:
Gross Alpha/Beta Particle Activity: The total radioactivity due to alpha or beta particle emissions as inferred from measurements on a dry sample.
answer:
Alpha emission is a type of radioactivity.