Find the voltage difference between two points when a battery does 10.0j of work on 4.0 x 10-2 c charge moving the charge between those two points

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

Does heating a metal wire increase or decrease its electrical resistance? why?