A current is set up a long copper pipe. Is there a magnetic field
inside the pipe?

A current is set up a long copper pipe. Is there a magnetic field inside the pipe?

A current is set up in a long copper pipe. Is there a magnetic field outside the pipe?

A straight horizontal conducting rod of length 0.45 m and mass 60 g is suspended by two vertical wires at its ends. A current of 5.0 A is set up in the rod through the wires. What magnetic field should be set up normal to the conductor in order that the tension in the wires is zero?

A long vertical wire in which a current is flowing produces a neutral point with the earth's magnetic field at a distance of 5 cm from the wire. If the horizontal component of the earth's magnetic induction is 0.18 gauss, then the current in the wire is

Choose the correct option:A rectangular coil of copper wires is rotated in magnetic field.The direction of induced current changes once in each:

How will you prove that current flowing through a copper wire produces magnetic effect?

If a long copper rod carries a direct current, the magnetic field associated with the current will be

A long hollow copper pipe carries a current. Then, the magneic field product is