A student measures the force on a long wire carrying an unknown current in a uniform…

PHYSICS · Subjective · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

A student measures the force on a

0.40\,\text{m}

long wire carrying an unknown current

I

in a

0.20\,\text{T}

uniform magnetic field and notes:

\theta = 0^\circ, 30^\circ, 60^\circ, 90^\circ

F\,(\text{N}) = 0,\; 0.12,\; 0.21,\; 0.24

Determine the value of the current

I