Alarge spool in an electrician's workshop has 60 m of insulation coated wire coiled around it. when the electrician connects a battery to the ends of the spooled wire, the resulting current is 2.0 a. some weeks later, after cutting off various lengths of wire for use in repairs, the electrician finds that the spooled wire carries a 2.6-a current when the same battery is connected to it. what is the length of wire remaining on the spool?

To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. a conductor is placed in an external electrostatic field. the external field is uniform before the conductor is placed within it. the conductor is completely isolated from any source of current or charge. part a: which of the following describes the electric field inside this conductor? it is in the same direction as the original external field.it is in the opposite direction from that of the original external field.it has a direction determined entirely by the charge on its surface.it is always zero. part b: the charge density inside the conductor is: 0non-zero; but uniformnon-zero; non-uniforminfinite part c: assume that at some point just outside the surface of the conductor, the electric field has magnitude e and is directed toward the surface of the conductor. what is the charge density η on the surface of the conductor at that point? express your answer in terms of e and ϵ0

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging

Where should a carbon monoxide detector be mounted?