A power cable carries a 100 A current. At what distance from the wire is the magnetic field equal to that of the earth, 5.00*10^-5 T? unit m

Aphysical change is a change in the size, shape,, or stafe of matter true or false

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force