Question

Which statement about an electromagnet is true

A) It doesn’t function without a source of current.
B) The core is made from a non magnetic material
C) It uses moving magnets to create an electric field
D) It creates a permanent and strong magnetic field

Answer 1

Explanation / Definition:

For this question I don't think we'll have to go deeply into the incorrect options to find out why they're wrong. We'll just get a simple definition of electromagnetism and find what the correct option is:

- Electromagnetism: the interaction of electricity (in the form of currents) with magnets (generation of magnetic fields).

Explanation 2 / Answer explained:

Given the definition above, we can deduce that if there is not current, electromagnetism will not be possible, since there wont be an interaction of electricity and magnetic fields.

Answer:

A.

Hope it helped,

BiologiaMagister

Answer 2

Answer: [A]

Step-by-step explanation:

without a source of current, there is no functioning.