Horatio drew a diagram to illustrate how magnetism is produced by electric currents

which best explains horatio's error?

a) magnetism is not produced by electric currents unless the wire is coiled.

b)the magnetic field does not continually spread outward from the wire.

c) the magnetic field is produced inside the wire, not outside of it.

d)magnetism is only produced when a metal bar is placed near the wire.

B)The magnetic field does not continually spread outward from the wire.

Explanation:

The lines of the magnetic field produced by an electrical current passing through a wire are concentric circles around the wire. The intensity of the magnetic field decreases as the inverse of the distance from the wire, .

Therefore, the error in the figure is that the magnetic field lines do not spread out radially from the wire, but they should be concentric circles around the wire itself.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y