$A$ current-carrying wire produces:

The magnetic field produced in a straight conducting wire on passing the current through it is ............ .

Name any three factors on which the magnitude of the magnetic field due to a solenoid depends.

For the circular coil carrying current shown alongside,draw magnetic field lines. Decide which of its face behaves as North Pole and which face as South Pole. Give reason to justify your answer.

Name four appliances wherein an electric motor,a rotating device that converts electrical energy to mechanical energy,is used as an important component. In what respect are motors different from generators?

The figure below shows a current-carrying loop passing through a sheet of cardboard. Draw three magnetic field lines on the cardboard.
Give two factors on which the magnitude of the magnetic field at the centre of the loop depends.