I oscillate between extremes, driving the heartbeat of many devices. What am I?
Category: Science · Difficulty: hard
Hint: Focus on the current that reverses direction periodically in circuits.
Answer
An alternating electric current
Explanation
Alternating current changes direction regularly powering many appliances, unlike direct current which flows one way.
This is a hard science riddle — a tricky one that takes a little thought. The answer is An alternating electric current.
More Science riddles
- I can bend light, but I’m not a mirror. My influence is felt in the void. What am I?
- I can turn into sediment, melt into magma, or be pushed up as mountains. What am I?
- What layer of Earth’s atmosphere, known for its role in weather and climate, contains most of the air we…
- I govern the flow of heat and work, in systems where energy can lurk. What am I in this scientific quirk?
- What do you call a reaction that releases energy, often in the form of heat or light?
- I am the basic unit of life, both plant and animal alike. Without me, nothing stands tall; I’m essential,…
- Though I may start as a gas, in your lungs I will reside, where the cycle of life meets the tides of the tide.
- In reactions I play my part, often in a bond, I am the start, what am I that joins atoms tight, creating…