A rectangular coil of 20 turns has dimensions

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Magnetism and Electromagnetism · Magnetism and Electromagnetism

Problem

4\,\text{cm}\times3\,\text{cm}

. It is placed in a uniform magnetic field of

0.20\,\text{T}

with its plane parallel to the field. What is the torque on the coil when it carries a current of

0.50\,\text{A}

? (a)

0.024\,\text{N m}

(b)

0.00012\,\text{N m}

(c)

0.0024\,\text{N m}

(d)

0.00024\,\text{N m}