Question

which of the following is shown above?
electromagnet
electric motor
electric generator
transformer
use the picture of an atom below to answer the question.
which statement best describes the part of the atom that is shown by the arrow?
it is an electron, and it has a negative charge.
it is an electron, and it has a positive charge.
it is a proton, and it has a negative charge.
it is a proton, and it has a positive charge.

Explanation:

For the first question, an electromagnet consists of a coil of wire wrapped around a core (like in the image). An electric motor converts electrical energy to mechanical energy, an electric generator does the opposite (mechanical to electrical), and a transformer changes voltage levels. The image shows a coil connected to a power source (like a battery), which is characteristic of an electromagnet.

For the second question, in an atom, electrons are outside the nucleus (as shown by the arrow), protons and neutrons are in the nucleus. Electrons have a negative charge, protons have a positive charge, neutrons are neutral.

Answer:

1. electromagnet
2. It is an electron, and it has a negative charge.