A long, straight wire carries a current. Is Ampere's law
valid for a loop that does not enclose the wire, or that
encloses the wire but is not circular?

A long straight wire carries a current of 35 A . What is the magnitude of the field B at a point 20 cm from the wire ?

A long, straight wire carries a current along the z-axis. One can find two points in the x-y plane such that

The field due to a long straight wire carrying a current I is proportional to …..

A straight wire carrying current I is made into a circular loop . If M is the magnetic moment associated with the loop , then length of the wire is

A long, straight wire carries a current i . The magnetizing field intensity H is measured at a point P close to the wire. A long, cylindrical iron rod is brought close to the wire so that the point P is at the centre of the rod. The value of H at P will

A long , straight wire carries a current i. A particle having a positive charge q and mass m, kept at a distance x_0 from the wire is projected towards it with a speed v. Find the minimum separation between the wire and the particle.

A long straight wire AB carries a current I. A proton P travels with a speed v, parallel to the wire , at a distance d from it in a direction opposite to the current as shown in figure what is the force experienced by the proton and what is its direction?

A long, straight wire of radius R carries a current distributed uniformly over its cross section. The magnitude of the magnetic field is

Show a conduction loop placed near a long, straight wire carrying current i as shown. If the current increases continuously, find the direction of the induced current in the loop.