Question

A: Transformers work with either AC or DC electricity. True/False

B: Power companies use high voltages to reduce power loss over long transmission distances. True/False
C: A(n) __________________ uses electromagnetic induction to increase or decrease voltage.
D: Materials that lose all electrical resistance at low temperatures are known as ____________________ and are ideal for constructing powerful electromagnets.
E: An electric device that uses an electromagnet to open and close a switch is a(n) ___________________.

Answer 1

The answers are as follows:

A. False – Transformers are designed to work on AC

B. True – This is to compensate the losses as the length of wire increases

C. Transformer – the transformer works in the principle of electromagnetic induction

D. Superconducting Magnet – magnet made from coils of a superconducting wire

E. Relay – This electrical switch is operated by a magnet