For the following question, select the correct option: What instrument measures potential difference?

✅ A. Mass × velocity

Linear momentum is p = mv. Read more

✅ C. Reflection

Reflection is the return of light from a surface. Read more

✅ B. Lever

A lever is a rigid bar that rotates around a fulcrum. Read more

✅ D. Refraction

Refraction is the change in direction of light due to a change in speed between media. Read more

✅ C. Energy

The joule is the SI unit of energy and work. Read more

✅ A. Hertz

Frequency is measured in hertz. Read more

✅ A. 9.8 m/s²

Near Earth's surface, gravitational acceleration is approximately 9.8 m/s². Read more

✅ B. Pascal

Pressure is measured in pascals. Read more