Assuming a current is flowing, what increases the strength of the magnetic field of a coiled electrical wire? select all that apply. straightening the wire changing the direction of the current flow adding more coils to the wire placing a metal bar within the coils stopping the current

The correct answer is:

C. Adding more coils to the wire.

D. Placing a metal bar within the coils.

Assuming a current is flowing these increase the strength of the magnetic field of a coiled electrical wire.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.