Physics

Problem

A rectangular coil

ABCD

has 50 turns. The lengths of the sides are

AB = CD = 6\,\text{cm}

and

BC = DA = 4\,\text{cm}

. The coil is mounted on a light axle so that sides

AB

and

CD

are horizontal. A uniform magnetic field of

0.25\,\text{T}

acts horizontally from north to south. A current of

3\,\text{A}

flows through the coil in the order

A\rightarrow B\rightarrow C\rightarrow D

as seen from the west side. (a) State the direction of force on side

AB

. (b) State the direction of force on side

CD

. (c) What turning effect (clockwise or anticlockwise when viewed from the north) will the coil experience? a. (a) Direction of force on side

AB

b. (b) Direction of force on side

CD

c. (c) Sense of rotation of the coil