Which option can be correctly defined as a device that steps up or steps down voltage?
A.battery
B.electrical transformer
C.electrical generator
D.electromagnet
A?
B. electrical transformer
The correct option that can be defined as a device that steps up or steps down voltage is B. electrical transformer.
The correct option that can be defined as a device that steps up or steps down voltage is option B, electrical transformer.
To verify this answer, we can understand the purpose and functioning of each option:
A. Battery: A battery is a device that stores chemical energy and converts it into electrical energy in a direct current (DC) form. While batteries can provide voltage, they do not step up or step down the voltage.
B. Electrical Transformer: An electrical transformer is a device that can increase (step up) or decrease (step down) the voltage of an alternating current (AC) electrical signal. It consists of two or more coils of wire, known as windings, and operates on the principle of electromagnetic induction to transfer electrical energy between them.
C. Electrical Generator: An electrical generator is a device that converts mechanical energy into electrical energy. It typically uses the principle of electromagnetic induction to generate an alternating current (AC). However, a generator does not specifically step up or step down the voltage.
D. Electromagnet: An electromagnet is a temporary magnet produced by passing an electric current through a coil of wire. While electromagnets are important in various applications, they do not serve the purpose of stepping up or stepping down voltage.
By analyzing the definitions and functionalities of each option, we can conclude that the correct answer is option B, electrical transformer.