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

PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

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}

(b)

40^{\circ}

(c)

54^{\circ}

(d)

60^{\circ}