State and explain the Clock face rule for determining the polarities of a circular wire carrying current.

State the clock rule to determine the polarity of any face of a circular current-carrying loop

State the nature of lines of force due to a circular coil carrying current.

Plot a magnetic field due to a circular coil carrying current and explain the law used to find the direction of magnetic field at the centre of circular coil carrying current.

State the expression for the magnetic field due to a circular are of wire carrying a current I. Hence find the magnetic field at the centre of circular coil and having n turns.

State the rule to determine the direction of a force experienced by a conductor carrying straight current placed in a magnetic field which is perpendicular to it.

The figure shows a long straight wire carrying a current I_1 along the axis of a circular ring carrying a current I_2 . Identify the correct statement.