A long, straight, circular cable carries a current in one direction uniformly distributed over its cross section. The current returns along the surface of the cable. (There is a very thin insulating layer separating the currents.) Find the self-inductance per unit length.

Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

With which of the following is the weak nuclear force associated? a.lightingb.nuclear decayc.ocean tidesd.stactic cling