Which statement is true? A) As the electric current through a wire increases, the magnetic field around the wire
becomes stronger.
B) As the electric current through a wire increases, the magnetic field around the wire becomes weaker.
C) As the electric current through a wire increases, the magnetic field around the wire is unaffected.
D) As the electric current through a wire decreases, the magnetic field around the wire becomes stronger.

Ineed the answers for these promblems i have

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.