An electric current passes through a long straight wire. At a distance 5 cm from the wire the magnetic field is `B`. The field at 20 cm from the wire would be

An electric current passes through a straight wire. At a distance 5 cm from the wire the magnetic field is B. The field at 20 cm from the wire would be

An electric current passes through a long straight copper wire. At a distance of 5 cm from the straight wire, the magnetic field is B. What is the magnetic field at a distance of 20 cm from the wire ?

An electric current passes through a long straight copper wire. At a distance of 5 cm from the straight wire, the magnetic field is B. What is the magnetic field at a distance of 20 cm from the wire ?

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

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 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 of 35 A . what is the magnitude of magnetic field B at a point 20 cm from the wire.