A 31.3-A current flows in a long straight wire. Find the strength of the resulting magnetic field at a distance of 45.3 cm from the wire.
= _________________ T
Two long parallel wires are separated by 3.23 cm and carry currents 1.53 A and 4.87 A. Find the magnitude of the magnetic force that acts on a 2.33-m length of either wire.
= _________________ N