Physics

Problem

A straight conductor of fixed length is placed in a uniform magnetic field. With a current of

5\,\text{A}

and the conductor making an angle of

60^{\circ}

with the field, the force experienced is

0.40\,\text{N}

. If the current is increased to

8\,\text{A}

, at what angle should the conductor be set so that the force becomes

0.60\,\text{N}

? a)

70^{\circ}

40^{\circ}

54^{\circ}

60^{\circ}