When a button is pushed on a battery-operated clock, the time display is illuminated. What process has taken place?
Pressure has been converted to light. Force has been converted to light. Closing an electric circuit has produced light. Opening an electric circuit has produced light.
Question: When a button is pushed on a battery-operated clock, the time display is illuminated. What process has taken place?
A. Pressure has been converted to light.
B. Force has been converted to light.
C. Closing an electric circuit has produced light.
D. Opening an electric circuit has produced light.
Answer: