A transformer is a device which step up or step down:
Correct answer: B. Voltage
- A. Energy
- B. Voltage
- C. Power
- D. All of above
Explanation
The explanation is: A transformer is an electrical device used to change a given alternating emf into a large or small alternating emf. A step up transformer steps up voltage while a step down transformer steps down voltage.
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About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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