A straight conductor long carries a current of in a uniform magnetic field of

MATHEMATICS · Single correct · A Level · Mathematics · Quantities and units in mechanics · Quantities and units in mechanics

Problem

A straight conductor

5\,\text{cm}

long carries a current of

10\,\text{A}

in a uniform magnetic field of

0.4\,\text{T}

. If the measured force on the conductor is

0.2\,\text{N}

, the angle between the conductor and the magnetic field is (a)

30^{\circ}

(b)

0^{\circ}

(c)

90^{\circ}

(d)

60^{\circ}