Answer:
The current in the wire under the influence of the force is 216.033 A
Solution:
According to the question:
Length of the wire, l = 0.676 m

Magnetic field of the Earth, 
Forces experienced by the wire, 
Also, we know that the force in a magnetic field is given by:



I = 216.033 A
It has a metallic luster
~ hope this helps ❤️
186282 miles. Hope it helps
Answer : The excess of electrons on the penny are,
electrons
Solution : Given,
Total charge = 
Charge on electron = 
Formula used :

Now put all the given values in this formula, we get the excess of electrons present on the penny.

Therefore, the excess of electrons on the penny are,
electrons